From 237903198968004d3dcce3aab677d6edc9855c62 Mon Sep 17 00:00:00 2001 From: TonyHui Date: Thu, 23 Feb 2017 13:50:04 +0800 Subject: [PATCH] =?UTF-8?q?1.=20=E5=AE=8C=E6=88=90=E6=95=B0=E6=8D=AE?= =?UTF-8?q?=E7=BB=93=E6=9E=84=E4=B9=A0=E9=A2=98=202.=20=E5=AE=8C=E6=88=90?= =?UTF-8?q?=E6=B5=8B=E8=AF=95=E7=94=A8=E4=BE=8B=203.=20=E4=BA=8C=E5=8F=89?= =?UTF-8?q?=E6=A0=91=E6=B7=BB=E5=8A=A0delete()=EF=BC=8C=20search()?= =?UTF-8?q?=EF=BC=8C=20min()=EF=BC=8C=20max()=20=E6=96=B9=E6=B3=95?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- group01/954958168/954958168.md | 0 .../class01/BasicDataStructure/.gitignore | 28 ++ .../class01/BasicDataStructure/pom.xml | 24 ++ .../com/aaront/exercise/basic/ArrayList.java | 90 +++++++ .../com/aaront/exercise/basic/BinaryTree.java | 235 ++++++++++++++++ .../com/aaront/exercise/basic/Iterator.java | 9 + .../com/aaront/exercise/basic/LinkedList.java | 129 +++++++++ .../java/com/aaront/exercise/basic/List.java | 9 + .../java/com/aaront/exercise/basic/Queue.java | 26 ++ .../java/com/aaront/exercise/basic/Stack.java | 29 ++ .../exercise/generic/GenericArrayList.java | 98 +++++++ .../exercise/generic/GenericBinaryTree.java | 255 ++++++++++++++++++ .../exercise/generic/GenericIterator.java | 9 + .../exercise/generic/GenericLinkedList.java | 140 ++++++++++ .../aaront/exercise/generic/GenericList.java | 9 + .../aaront/exercise/generic/GenericQueue.java | 30 +++ .../aaront/exercise/generic/GenericStack.java | 33 +++ .../com/aaront/execrise/basic/AllTest.java | 19 ++ .../aaront/execrise/basic/ArrayListTest.java | 69 +++++ .../aaront/execrise/basic/BinaryTreeTest.java | 94 +++++++ .../aaront/execrise/basic/LinkListTest.java | 81 ++++++ .../com/aaront/execrise/basic/QueueTest.java | 33 +++ .../com/aaront/execrise/basic/StackTest.java | 46 ++++ .../execrise/generic/GenericAllTest.java | 19 ++ .../generic/GenericArrayListTest.java | 76 ++++++ .../generic/GenericBinaryTreeTest.java | 75 ++++++ .../generic/GenericLinkedListTest.java | 90 +++++++ .../execrise/generic/GenericQueueTest.java | 33 +++ .../execrise/generic/GenericStackTest.java | 46 ++++ 29 files changed, 1834 insertions(+) create mode 100644 group01/954958168/954958168.md create mode 100644 group01/954958168/class01/BasicDataStructure/.gitignore create mode 100644 group01/954958168/class01/BasicDataStructure/pom.xml create mode 100644 group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/ArrayList.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/BinaryTree.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/Iterator.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/LinkedList.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/List.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/Queue.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/Stack.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericArrayList.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericBinaryTree.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericIterator.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericLinkedList.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericList.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericQueue.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericStack.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/AllTest.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/ArrayListTest.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/BinaryTreeTest.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/LinkListTest.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/QueueTest.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/StackTest.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericAllTest.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericArrayListTest.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericBinaryTreeTest.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericLinkedListTest.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericQueueTest.java create mode 100644 group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericStackTest.java diff --git a/group01/954958168/954958168.md b/group01/954958168/954958168.md new file mode 100644 index 0000000000..e69de29bb2 diff --git a/group01/954958168/class01/BasicDataStructure/.gitignore b/group01/954958168/class01/BasicDataStructure/.gitignore new file mode 100644 index 0000000000..eb95f3ba7f --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/.gitignore @@ -0,0 +1,28 @@ +# Created by .ignore support plugin (hsz.mobi) +### Java template +*.class + +# Log file +*.log + +# BlueJ files +*.ctxt + +# Mobile Tools for Java (J2ME) +.mtj.tmp/ + +# Package Files # +*.jar +*.war +*.ear +*.zip +*.tar.gz +*.rar + +# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml +hs_err_pid* + +# Idea Files # +.idea +*.iml + diff --git a/group01/954958168/class01/BasicDataStructure/pom.xml b/group01/954958168/class01/BasicDataStructure/pom.xml new file mode 100644 index 0000000000..a224b2116f --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/pom.xml @@ -0,0 +1,24 @@ + + + 4.0.0 + + com.aaront.execrise + coding2017 + 1.0.0-SNAPSHOT + jar + + + + UTF-8 + 1.8 + + + + + junit + junit + 4.12 + + + \ No newline at end of file diff --git a/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/ArrayList.java b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/ArrayList.java new file mode 100644 index 0000000000..ae462ea905 --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/ArrayList.java @@ -0,0 +1,90 @@ +package com.aaront.exercise.basic; + +import java.util.Arrays; + +public class ArrayList implements List { + + private int size = 0; + + private static final double factor = 0.75; + + private Object[] elementData = new Object[100]; + + public void add(Object o) { + _ensureCapacityEnough(); + elementData[size++] = o; + } + + public void add(int index, Object o) { + if (index < 0 || index > size) throw new IndexOutOfBoundsException("index超出边界"); + _ensureCapacityEnough(); + int i = size; + for (; i > index; i--) { + elementData[i] = elementData[i - 1]; + } + elementData[i] = o; + size++; + } + + private void _ensureCapacityEnough() { + if (size >= elementData.length) { + dilatancy(); + } + } + + private void dilatancy() { + int newLength = elementData.length + (int) (elementData.length * factor); + elementData = Arrays.copyOf(elementData, newLength); + } + + public Object get(int index) { + if(index < 0 || index >= size) throw new IndexOutOfBoundsException("index超出边界"); + return elementData[index]; + } + + public Object remove(int index) { + if (index < 0 || index >= size) throw new IndexOutOfBoundsException("index超出边界"); + Object element = elementData[index]; + System.arraycopy(elementData, index + 1, elementData, index, size - 1 - index); + size--; + return element; + + } + + public int size() { + return size; + } + + public Iterator iterator() { + return new ArrayListIterator(this); + } + + public Object[] toArray() { + Object[] objects = new Object[size]; + System.arraycopy(elementData, 0, objects, 0, size); + return objects; + } + + private static class ArrayListIterator implements Iterator { + + private ArrayList arrayList; + private int pos = 0; + + private ArrayListIterator(ArrayList arrayList) { + this.arrayList = arrayList; + } + + public boolean hasNext() { + return pos < arrayList.size(); + } + + public Object next() { + return arrayList.elementData[pos++]; + } + + public void remove() { + arrayList.remove(pos - 1); + pos--; + } + } +} diff --git a/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/BinaryTree.java b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/BinaryTree.java new file mode 100644 index 0000000000..2c0d156561 --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/BinaryTree.java @@ -0,0 +1,235 @@ +package com.aaront.exercise.basic; + +public class BinaryTree { + + private BinaryTreeNode head = new BinaryTreeNode(null); + private BinaryTreeNode root; + private int size; + private int index = 0; + + public static final int PREORDER = 0; + public static final int INORDER = 1; + public static final int POSTORDER = 2; + public static final int HIERARCHICAL = 3; + + public static final int RECURSION = 10; + public static final int ITERATION = 11; + + public void add(Integer o) { + BinaryTreeNode node = new BinaryTreeNode(o); + if (root == null) { + root = node; + head.setLeft(root); + } else { + insert(root, node); + } + size++; + } + + private void insert(BinaryTreeNode node, BinaryTreeNode newNode) { + // 要插入的节点插入当前节点的左子树 + if (node.getData() > newNode.getData()) { + if (node.getLeft() == null) { + node.setLeft(newNode); + } else { + insert(node.left, newNode); + } + } else { // 要插入的节点插入当前节点的右子树 + if (node.getRight() == null) { + node.setRight(newNode); + } else { + insert(node.right, newNode); + } + } + } + + public BinaryTreeNode search(int data) { + return search(data, ITERATION); + } + + public BinaryTreeNode search(int data, int method) { + switch (method) { + case RECURSION: + return findNodeRecursion(root, data); + case ITERATION: + return findNodeIteration(data); + default: + throw new IllegalArgumentException("不支持的查找方法"); + } + } + + private BinaryTreeNode findNodeRecursion(BinaryTreeNode node, int data) { + if (node == null) return null; + if (node.getData() == data) return node; + if (node.getData() > data) return findNodeRecursion(node.getLeft(), data); + return findNodeRecursion(node.getRight(), data); + } + + private BinaryTreeNode findNodeIteration(int data) { + BinaryTreeNode currentNode = root; + while (currentNode != null) { + if (currentNode.getData() == data) { + return currentNode; + } + if (currentNode.getData() > data) { + currentNode = currentNode.getLeft(); + } else { + currentNode = currentNode.getRight(); + } + } + return null; + } + + public BinaryTreeNode min() { + return findMin(root); + } + + private BinaryTreeNode findMin(BinaryTreeNode node) { + if (node == null) return null; + if (node.getLeft() == null) return node; + return findMin(node.getLeft()); + } + + public BinaryTreeNode max() { + return findMax(root); + } + + private BinaryTreeNode findMax(BinaryTreeNode node) { + if (node == null) return null; + if (node.getRight() == null) return node; + return findMax(node.getRight()); + } + + public void delete(Integer data) { + BinaryTreeNode node = search(data); + if (node == null) return; + BinaryTreeNode parentNode = searchParentNode(node); + if (parentNode == null) return; + // 删除叶子节点 + if (node.getLeft() == null && node.getRight() == null) { + if (parentNode.getLeft() == node) parentNode.setLeft(null); + else parentNode.setRight(null); + } else if (node.getLeft() != null && node.getRight() == null) { // 删除只有左子树的节点 + if (parentNode.getLeft() == node) parentNode.setLeft(node.getLeft()); + else parentNode.setRight(node.getLeft()); + } else if (node.getRight() != null && node.getLeft() == null) { // 删除只有右子树的节点 + if (parentNode.getLeft() == node) parentNode.setLeft(node.getRight()); + else parentNode.setRight(node.getRight()); + } else { // 删除有两个子树的节点 + BinaryTreeNode replace = findMin(node.getRight()); + BinaryTreeNode replaceParentNode = searchParentNode(replace); + replaceParentNode.setLeft(replace.getRight()); + node.setData(replace.getData()); + replace.setLeft(null); + replace.setRight(null); + } + size--; + } + + private BinaryTreeNode searchParentNode(BinaryTreeNode node) { + if (node == null) return null; + if (node == root) return head; + BinaryTreeNode current = root; + while (current != null) { + if (current.getLeft() == node || current.getRight() == node) return current; + if (current.getData().compareTo(node.getData()) > 0) current = current.getLeft(); + else current = current.getRight(); + } + return null; + } + + public int[] traversal() { + return traversal(PREORDER); + } + + public int[] traversal(int order) { + int[] datas = new int[size]; + if (order == PREORDER) { + preorderTraversal(root, datas); + } else if (order == INORDER) { + inorderTraversal(root, datas); + } else if (order == POSTORDER) { + postorderTraversal(root, datas); + } else { + hierarchicalTraversal(root, datas); + } + index = 0; + return datas; + } + + private void preorderTraversal(BinaryTreeNode node, int[] datas) { + if (node == null) { + return; + } + + datas[index++] = node.getData(); + preorderTraversal(node.getLeft(), datas); + preorderTraversal(node.getRight(), datas); + } + + private void inorderTraversal(BinaryTreeNode node, int[] datas) { + if (node == null) { + return; + } + + inorderTraversal(node.getLeft(), datas); + datas[index++] = node.getData(); + inorderTraversal(node.getRight(), datas); + } + + private void postorderTraversal(BinaryTreeNode node, int[] datas) { + if (node == null) { + return; + } + + postorderTraversal(node.getLeft(), datas); + postorderTraversal(node.getRight(), datas); + datas[index++] = node.getData(); + } + + private void hierarchicalTraversal(BinaryTreeNode node, int[] datas) { + if (node == null) return; + Queue queue = new Queue(); + queue.enQueue(node); + while (!queue.isEmpty()) { + BinaryTreeNode tmp = (BinaryTreeNode) queue.deQueue(); + datas[index++] = tmp.getData(); + if (tmp.getLeft() != null) queue.enQueue(tmp.getLeft()); + if (tmp.getRight() != null) queue.enQueue(tmp.getRight()); + } + } + + public class BinaryTreeNode { + private Integer data; + private BinaryTreeNode left; + private BinaryTreeNode right; + + public BinaryTreeNode(Integer data) { + this.data = data; + } + + public Integer getData() { + return data; + } + + public void setData(Integer data) { + this.data = data; + } + + public BinaryTreeNode getLeft() { + return left; + } + + public void setLeft(BinaryTreeNode left) { + this.left = left; + } + + public BinaryTreeNode getRight() { + return right; + } + + public void setRight(BinaryTreeNode right) { + this.right = right; + } + } +} diff --git a/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/Iterator.java b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/Iterator.java new file mode 100644 index 0000000000..e446dd8f65 --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/Iterator.java @@ -0,0 +1,9 @@ +package com.aaront.exercise.basic; + +public interface Iterator { + boolean hasNext(); + + Object next(); + + void remove(); +} diff --git a/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/LinkedList.java b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/LinkedList.java new file mode 100644 index 0000000000..504e73580b --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/LinkedList.java @@ -0,0 +1,129 @@ +package com.aaront.exercise.basic; + +public class LinkedList implements List { + + private Node head = new Node(null); + private int size = 0; + + public void add(Object o) { + Node newNode = new Node(o); + Node first = head.next; + Node second = head; + while (first != null) { + second = first; + first = first.next; + } + second.next = newNode; + size++; + } + + public void add(int index, Object o) { + if (index < 0 || index > size) throw new IndexOutOfBoundsException("索引超出范围"); + Node first = head; + int i = 0; + while (i < index) { + first = first.next; + i++; + } + Node node = new Node(o); + node.next = first.next; + first.next = node; + size++; + } + + public Object get(int index) { + if (index < 0 || index >= size) throw new IndexOutOfBoundsException("索引超出范围"); + Node first = head.next; + int i = 0; + while (i < index) { + first = first.next; + i++; + } + return first.data; + } + + public Object remove(int index) { + if (index < 0 || index >= size) throw new IndexOutOfBoundsException("索引超出范围"); + Node first = head; + int i = 0; + while (i < index) { + first = first.next; + i++; + } + Node element = first.next; + first.next = first.next.next; + size--; + return element.data; + } + + public int size() { + return size; + } + + public void addFirst(Object o) { + add(0, o); + } + + public void addLast(Object o) { + add(size, o); + } + + public Object removeFirst() { + return remove(0); + } + + public Object removeLast() { + return remove(size - 1); + } + + public Iterator iterator() { + return new LinkedListIterator(this); + } + + public Object[] toArray() { + Object[] objects = new Object[size]; + Node first = head.next; + int pos = 0; + while (first!= null) { + objects[pos++] = first.data; + first = first.next; + } + return objects; + } + + private static class LinkedListIterator implements Iterator { + + private int pos = 0; + private LinkedList linkedList; + + private LinkedListIterator(LinkedList linkList) { + this.linkedList = linkList; + } + + @Override + public boolean hasNext() { + return pos < linkedList.size(); + } + + @Override + public Object next() { + return linkedList.get(pos++); + } + + @Override + public void remove() { + linkedList.remove(pos - 1); + pos--; + } + } + + + private static class Node { + private Object data; + private Node next; + + private Node(Object data) { + this.data = data; + } + } +} diff --git a/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/List.java b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/List.java new file mode 100644 index 0000000000..0988b60f4a --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/List.java @@ -0,0 +1,9 @@ +package com.aaront.exercise.basic; + +public interface List { + public void add(Object o); + public void add(int index, Object o); + public Object get(int index); + public Object remove(int index); + public int size(); +} diff --git a/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/Queue.java b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/Queue.java new file mode 100644 index 0000000000..7c310bca9e --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/Queue.java @@ -0,0 +1,26 @@ +package com.aaront.exercise.basic; + +public class Queue { + + private LinkedList linkedList = new LinkedList(); + + public void enQueue(Object o) { + linkedList.add(o); + } + + public Object deQueue() { + return linkedList.removeFirst(); + } + + public boolean isEmpty() { + return linkedList.size() == 0; + } + + public int size() { + return linkedList.size(); + } + + public Object[] toArray() { + return linkedList.toArray(); + } +} diff --git a/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/Stack.java b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/Stack.java new file mode 100644 index 0000000000..450d21ee89 --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/basic/Stack.java @@ -0,0 +1,29 @@ +package com.aaront.exercise.basic; + +public class Stack { + private ArrayList elementData = new ArrayList(); + + public void push(Object o) { + elementData.add(o); + } + + public Object pop() { + return elementData.remove(elementData.size() - 1); + } + + public Object peek() { + return elementData.get(elementData.size() - 1); + } + + public boolean isEmpty() { + return elementData.size() == 0; + } + + public int size() { + return elementData.size(); + } + + public Object[] toArray() { + return elementData.toArray(); + } +} diff --git a/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericArrayList.java b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericArrayList.java new file mode 100644 index 0000000000..a099746b55 --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericArrayList.java @@ -0,0 +1,98 @@ +package com.aaront.exercise.generic; + +import java.util.Arrays; + +public class GenericArrayList implements GenericList { + + private int size = 0; + + private static final double factor = 0.75; + + private Object[] elementData = new Object[100]; + + public void add(T o) { + _ensureCapacityEnough(); + elementData[size++] = o; + } + + public void add(int index, T o) { + if (index < 0 || index > size) throw new IndexOutOfBoundsException("index超出边界"); + _ensureCapacityEnough(); + int i = size; + for (; i > index; i--) { + elementData[i] = elementData[i - 1]; + } + elementData[i] = o; + size++; + } + + private void _ensureCapacityEnough() { + if (size >= elementData.length) { + dilatancy(); + } + } + + private void dilatancy() { + int newLength = elementData.length + (int) (elementData.length * factor); + elementData = Arrays.copyOf(elementData, newLength); + } + + public T get(int index) { + if(index < 0 || index >= size) throw new IndexOutOfBoundsException("index超出边界"); + return (T) elementData[index]; + } + + public T remove(int index) { + if (index < 0 || index >= size) throw new IndexOutOfBoundsException("index超出边界"); + Object element = elementData[index]; + System.arraycopy(elementData, index + 1, elementData, index, size - 1 - index); + size--; + return (T) element; + + } + + public int size() { + return size; + } + + public GenericIterator iterator() { + return new ArrayListGenericIterator(this); + } + + public Object[] toArray() { + Object[] objects = new Object[size]; + System.arraycopy(elementData, 0, objects, 0, size); + return objects; + } + + public T[] toArray(T[] a) { + if (a.length < size) + // Make a new array of a's runtime type, but my contents: + return (T[]) Arrays.copyOf(elementData, size, a.getClass()); + System.arraycopy(elementData, 0, a, 0, size); + return a; + } + + private static class ArrayListGenericIterator implements GenericIterator { + + private GenericArrayList genericArrayList; + private int pos = 0; + + private ArrayListGenericIterator(GenericArrayList genericArrayList) { + this.genericArrayList = genericArrayList; + } + + public boolean hasNext() { + return pos < genericArrayList.size(); + } + + public T next() { + return (T) genericArrayList.elementData[pos++]; + } + + public void remove() { + genericArrayList.remove(pos - 1); + pos--; + } + } +} \ No newline at end of file diff --git a/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericBinaryTree.java b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericBinaryTree.java new file mode 100644 index 0000000000..e5cf3b439a --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericBinaryTree.java @@ -0,0 +1,255 @@ +package com.aaront.exercise.generic; + +import java.util.Arrays; + +public class GenericBinaryTree> { + + private BinaryTreeNode head = new BinaryTreeNode<>(null); + private BinaryTreeNode root; + private int size; + private int index = 0; + public static final int PREORDER = 0; + public static final int INORDER = 1; + public static final int POSTORDER = 2; + public static final int HIERARCHICAL = 3; + + public static final int RECURSION = 10; + public static final int ITERATION = 11; + + public void add(T o) { + BinaryTreeNode node = new BinaryTreeNode<>(o); + if (root == null) { + root = node; + head.setLeft(root); + } else { + insert(root, node); + } + size++; + } + + private void insert(BinaryTreeNode node, BinaryTreeNode newNode) { + // 要插入的节点插入当前节点的左子树 + if (node.getData().compareTo(newNode.getData()) > 0) { + if (node.getLeft() == null) { + node.setLeft(newNode); + } else { + insert(node.left, newNode); + } + } else { // 要插入的节点插入当前节点的右子树 + if (node.getRight() == null) { + node.setRight(newNode); + } else { + insert(node.right, newNode); + } + } + } + + public BinaryTreeNode search(T data) { + return search(data, ITERATION); + } + + public BinaryTreeNode search(T data, int method) { + switch (method) { + case RECURSION: + return findNodeRecursion(root, data); + case ITERATION: + return findNodeIteration(data); + default: + throw new IllegalArgumentException("不支持的查找方法"); + } + } + + private BinaryTreeNode findNodeRecursion(BinaryTreeNode node, T data) { + if (node == null) return null; + if (node.getData().compareTo(data) == 0) return node; + if (node.getData().compareTo(data) > 0) return findNodeRecursion(node.getLeft(), data); + return findNodeRecursion(node.getRight(), data); + } + + private BinaryTreeNode findNodeIteration(T data) { + BinaryTreeNode currentNode = root; + while (currentNode != null) { + if (currentNode.getData().compareTo(data) == 0) { + return currentNode; + } + if (currentNode.getData().compareTo(data) > 0) { + currentNode = currentNode.getLeft(); + } else { + currentNode = currentNode.getRight(); + } + } + return null; + } + + public BinaryTreeNode min() { + return findMin(root); + } + + private BinaryTreeNode findMin(BinaryTreeNode node) { + if (node == null) return null; + if (node.getLeft() == null) return node; + return findMin(node.getLeft()); + } + + public BinaryTreeNode max() { + return findMax(root); + } + + private BinaryTreeNode findMax(BinaryTreeNode node) { + if (node == null) return null; + if (node.getRight() == null) return node; + return findMax(node.getRight()); + } + + public void delete(T data) { + BinaryTreeNode node = search(data); + if (node == null) return; + BinaryTreeNode parentNode = searchParentNode(node); + if (parentNode == null) return; + // 删除叶子节点 + if (node.getLeft() == null && node.getRight() == null) { + if (parentNode.getLeft() == node) parentNode.setLeft(null); + else parentNode.setRight(null); + } else if (node.getLeft() != null && node.getRight() == null) { // 删除只有左子树的节点 + if (parentNode.getLeft() == node) parentNode.setLeft(node.getLeft()); + else parentNode.setRight(node.getLeft()); + } else if (node.getRight() != null && node.getLeft() == null) { // 删除只有右子树的节点 + if (parentNode.getLeft() == node) parentNode.setLeft(node.getRight()); + else parentNode.setRight(node.getRight()); + } else { // 删除有两个子树的节点 + BinaryTreeNode replace = findMin(node.getRight()); + BinaryTreeNode replaceParentNode = searchParentNode(replace); + replaceParentNode.setLeft(replace.getRight()); + node.setData(replace.getData()); + replace.setLeft(null); + replace.setRight(null); + } + size--; + } + + private BinaryTreeNode searchParentNode(BinaryTreeNode node) { + if (node == null) return null; + if (node == root) return head; + BinaryTreeNode current = root; + while (current != null) { + if (current.getLeft() == node || current.getRight() == node) return current; + if (current.getData().compareTo(node.getData()) > 0) current = current.getLeft(); + else current = current.getRight(); + } + return null; + } + + public Object[] traversal() { + return traversal(PREORDER); + } + + public T[] traversal(T[] a) { + Object[] elementData = traversal(PREORDER); + return toArray(elementData, a); + } + + public T[] traversal(int order, T[] a) { + Object[] elementData = traversal(order); + return toArray(elementData, a); + } + + private T[] toArray(Object[] elementData, T[] a) { + if (a.length < size) + // Make a new array of a's runtime type, but my contents: + return (T[]) Arrays.copyOf(elementData, size, a.getClass()); + System.arraycopy(elementData, 0, a, 0, size); + return a; + } + + public Object[] traversal(int order) { + Object[] datas = new Object[size]; + if (order == PREORDER) { + preorderTraversal(root, datas); + } else if (order == INORDER) { + inorderTraversal(root, datas); + } else if (order == POSTORDER) { + postorderTraversal(root, datas); + } else { + hierarchicalTraversal(root, datas); + } + index = 0; + return datas; + } + + private void preorderTraversal(BinaryTreeNode node, Object[] datas) { + if (node == null) { + return; + } + + datas[index++] = node.getData(); + preorderTraversal(node.getLeft(), datas); + preorderTraversal(node.getRight(), datas); + } + + private void inorderTraversal(BinaryTreeNode node, Object[] datas) { + if (node == null) { + return; + } + + inorderTraversal(node.getLeft(), datas); + datas[index++] = node.getData(); + inorderTraversal(node.getRight(), datas); + } + + private void postorderTraversal(BinaryTreeNode node, Object[] datas) { + if (node == null) { + return; + } + + postorderTraversal(node.getLeft(), datas); + postorderTraversal(node.getRight(), datas); + datas[index++] = node.getData(); + } + + private void hierarchicalTraversal(BinaryTreeNode node, Object[] datas) { + if (node == null) return; + GenericQueue> queue = new GenericQueue<>(); + queue.enQueue(node); + while (!queue.isEmpty()) { + BinaryTreeNode tmp = queue.deQueue(); + datas[index++] = tmp.getData(); + if (tmp.getLeft() != null) queue.enQueue(tmp.getLeft()); + if (tmp.getRight() != null) queue.enQueue(tmp.getRight()); + } + } + + + class BinaryTreeNode> { + private T data; + private BinaryTreeNode left; + private BinaryTreeNode right; + + public BinaryTreeNode(T data) { + this.data = data; + } + + public T getData() { + return data; + } + + public void setData(T data) { + this.data = data; + } + + public BinaryTreeNode getLeft() { + return left; + } + + public void setLeft(BinaryTreeNode left) { + this.left = left; + } + + public BinaryTreeNode getRight() { + return right; + } + + public void setRight(BinaryTreeNode right) { + this.right = right; + } + } +} diff --git a/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericIterator.java b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericIterator.java new file mode 100644 index 0000000000..565114dce7 --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericIterator.java @@ -0,0 +1,9 @@ +package com.aaront.exercise.generic; + +public interface GenericIterator { + boolean hasNext(); + + T next(); + + void remove(); +} diff --git a/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericLinkedList.java b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericLinkedList.java new file mode 100644 index 0000000000..7caf32eae1 --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericLinkedList.java @@ -0,0 +1,140 @@ +package com.aaront.exercise.generic; + +import java.util.Arrays; + +public class GenericLinkedList implements GenericList { + + private Node head = new Node<>(null); + private int size = 0; + + public void add(T o) { + Node newNode = new Node<>(o); + Node first = head.next; + Node second = head; + while (first != null) { + second = first; + first = first.next; + } + second.next = newNode; + size++; + } + + public void add(int index, T o) { + if (index < 0 || index > size) throw new IndexOutOfBoundsException("索引超出范围"); + Node first = head; + int i = 0; + while (i < index) { + first = first.next; + i++; + } + Node node = new Node<>(o); + node.next = first.next; + first.next = node; + size++; + } + + public T get(int index) { + if (index < 0 || index >= size) throw new IndexOutOfBoundsException("索引超出范围"); + Node first = head.next; + int i = 0; + while (i < index) { + first = first.next; + i++; + } + return first.data; + } + + public T remove(int index) { + if (index < 0 || index >= size) throw new IndexOutOfBoundsException("索引超出范围"); + Node first = head; + int i = 0; + while (i < index) { + first = first.next; + i++; + } + Node element = first.next; + first.next = first.next.next; + size--; + return element.data; + } + + public int size() { + return size; + } + + public void addFirst(T o) { + add(0, o); + } + + public void addLast(T o) { + add(size, o); + } + + public T removeFirst() { + return remove(0); + } + + public T removeLast() { + return remove(size - 1); + } + + public GenericIterator iterator() { + return new LinkedListGenericIterator<>(this); + } + + public Object[] toArray() { + Object[] objects = new Object[size]; + Node first = head.next; + int pos = 0; + while (first != null) { + objects[pos++] = first.data; + first = first.next; + } + return objects; + } + + public T[] toArray(T[] a) { + Object[] elementData = toArray(); + if (a.length < size) + // Make a new array of a's runtime type, but my contents: + return (T[]) Arrays.copyOf(elementData, size, a.getClass()); + System.arraycopy(elementData, 0, a, 0, size); + return a; + } + + private static class LinkedListGenericIterator implements GenericIterator { + + private int pos = 0; + private GenericLinkedList genericLinkedList; + + private LinkedListGenericIterator(GenericLinkedList linkList) { + this.genericLinkedList = linkList; + } + + @Override + public boolean hasNext() { + return pos < genericLinkedList.size(); + } + + @Override + public T next() { + return genericLinkedList.get(pos++); + } + + @Override + public void remove() { + genericLinkedList.remove(pos - 1); + pos--; + } + } + + + private static class Node { + private T data; + private Node next; + + private Node(T data) { + this.data = data; + } + } +} diff --git a/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericList.java b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericList.java new file mode 100644 index 0000000000..94dc9f8a98 --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericList.java @@ -0,0 +1,9 @@ +package com.aaront.exercise.generic; + +public interface GenericList { + public void add(T o); + public void add(int index, T o); + public T get(int index); + public T remove(int index); + public int size(); +} \ No newline at end of file diff --git a/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericQueue.java b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericQueue.java new file mode 100644 index 0000000000..d5cf5681e5 --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericQueue.java @@ -0,0 +1,30 @@ +package com.aaront.exercise.generic; + +public class GenericQueue { + + private GenericLinkedList linkedList = new GenericLinkedList<>(); + + public void enQueue(T o) { + linkedList.add(o); + } + + public T deQueue() { + return linkedList.removeFirst(); + } + + public boolean isEmpty() { + return linkedList.size() == 0; + } + + public int size() { + return linkedList.size(); + } + + public Object[] toArray() { + return linkedList.toArray(); + } + + public T[] toArray(T[] a) { + return linkedList.toArray(a); + } +} diff --git a/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericStack.java b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericStack.java new file mode 100644 index 0000000000..9efb2f2220 --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/main/java/com/aaront/exercise/generic/GenericStack.java @@ -0,0 +1,33 @@ +package com.aaront.exercise.generic; + +public class GenericStack { + private GenericArrayList elementData = new GenericArrayList<>(); + + public void push(T o) { + elementData.add(o); + } + + public T pop() { + return elementData.remove(elementData.size() - 1); + } + + public T peek() { + return elementData.get(elementData.size() - 1); + } + + public boolean isEmpty() { + return elementData.size() == 0; + } + + public int size() { + return elementData.size(); + } + + public Object[] toArray() { + return elementData.toArray(); + } + + public T[] toArray(T[] a) { + return elementData.toArray(a); + } +} diff --git a/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/AllTest.java b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/AllTest.java new file mode 100644 index 0000000000..ebff633b23 --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/AllTest.java @@ -0,0 +1,19 @@ +package com.aaront.execrise.basic; + +import org.junit.runner.RunWith; +import org.junit.runners.Suite; + +/** + * @author tonyhui + * @since 17/2/21 + */ +@RunWith(Suite.class) +@Suite.SuiteClasses({ + ArrayListTest.class, + BinaryTreeTest.class, + LinkListTest.class, + QueueTest.class, + StackTest.class +}) +public class AllTest { +} diff --git a/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/ArrayListTest.java b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/ArrayListTest.java new file mode 100644 index 0000000000..dcc45d792e --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/ArrayListTest.java @@ -0,0 +1,69 @@ +package com.aaront.execrise.basic; + +import com.aaront.exercise.basic.ArrayList; +import com.aaront.exercise.basic.Iterator; +import org.junit.Assert; +import org.junit.Before; +import org.junit.Test; + +/** + * @author tonyhui + * @since 17/2/20 + */ +public class ArrayListTest { + + private ArrayList arrayList = new ArrayList(); + + @Before + public void init() { + arrayList.add(1); + arrayList.add(2); + arrayList.add(3); + } + + @Test + public void testAdd() { + Assert.assertEquals(arrayList.get(0), 1); + Assert.assertEquals(arrayList.get(1), 2); + Assert.assertEquals(arrayList.get(2), 3); + Assert.assertEquals(arrayList.size(), 3); + } + + @Test + public void testAddIndex() { + arrayList.add(1, 4); + arrayList.add(2, 5); + Assert.assertArrayEquals(arrayList.toArray(), new Object[]{1, 4, 5, 2, 3}); + } + + @Test + public void testToArray() { + Assert.assertArrayEquals(arrayList.toArray(), new Object[]{1, 2, 3}); + } + + @Test + public void testGet() { + Assert.assertEquals(arrayList.get(2), 3); + Assert.assertEquals(arrayList.get(0), 1); + Assert.assertEquals(arrayList.get(1), 2); + } + + @Test + public void testRemove() { + testAddIndex(); + arrayList.remove(2); + arrayList.add(4, 10); + arrayList.add(3, 9); + Assert.assertArrayEquals(arrayList.toArray(), new Object[]{1, 4, 2, 9, 3, 10}); + } + + @Test + public void testIterator() { + Iterator iterator = arrayList.iterator(); + while (iterator.hasNext()) { + iterator.next(); + iterator.remove(); + } + Assert.assertArrayEquals(arrayList.toArray(), new Object[]{}); + } +} diff --git a/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/BinaryTreeTest.java b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/BinaryTreeTest.java new file mode 100644 index 0000000000..11fb7ad66b --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/BinaryTreeTest.java @@ -0,0 +1,94 @@ +package com.aaront.execrise.basic; + +import com.aaront.exercise.basic.BinaryTree; +import org.junit.Assert; +import org.junit.Before; +import org.junit.Test; + +/** + * @author tonyhui + * @since 17/2/20 + */ +public class BinaryTreeTest { + + private BinaryTree binaryTree = null; + + @Before + public void init() { + int[] datas = new int[]{9, 4, 5, 7, 1, 2, 3, 10, 17, 9}; + binaryTree = new BinaryTree(); + for (int data : datas) { + binaryTree.add(data); + } + } + + + @Test + public void testAdd() { + int[] preorderDatas = binaryTree.traversal(BinaryTree.PREORDER); + Assert.assertArrayEquals(preorderDatas, new int[]{9, 4, 1, 2, 3, 5, 7, 10, 9, 17}); + int[] inorderDatas = binaryTree.traversal(BinaryTree.INORDER); + Assert.assertArrayEquals(inorderDatas, new int[]{1, 2, 3, 4, 5, 7, 9, 9, 10, 17}); + int[] postorderDatas = binaryTree.traversal(BinaryTree.POSTORDER); + Assert.assertArrayEquals(postorderDatas, new int[]{3, 2, 1, 7, 5, 4, 9, 17, 10, 9}); + int[] hierarchicalDatas = binaryTree.traversal(BinaryTree.HIERARCHICAL); + Assert.assertArrayEquals(hierarchicalDatas, new int[]{9, 4, 10, 1, 5, 9, 17, 2, 7, 3}); + } + + @Test + public void testSearch() { + BinaryTree.BinaryTreeNode node1 = binaryTree.search(5, BinaryTree.RECURSION); + Assert.assertTrue(node1.getData() == 5); + BinaryTree.BinaryTreeNode node2 = binaryTree.search(17, BinaryTree.RECURSION); + Assert.assertTrue(node2.getData() == 17); + BinaryTree.BinaryTreeNode node3 = binaryTree.search(100, BinaryTree.RECURSION); + Assert.assertTrue(node3 == null); + } + + @Test + public void testMin() { + BinaryTree.BinaryTreeNode min = binaryTree.min(); + Assert.assertTrue(min.getData() == 1); + } + + @Test + public void testMax() { + BinaryTree.BinaryTreeNode max = binaryTree.max(); + Assert.assertTrue(max.getData() == 17); + } + + @Test + public void testDelete() { + buildTree(new int[]{50, 25, 12, 11, 40, 14, 35, 45, 44, 43, 42, 75, 55, 70, 60, 65, 63, 61, 90, 80, 85, 82, 88}); + // 删除叶子节点 + binaryTree.delete(11); + int[] preOrderDatas = binaryTree.traversal(); + Assert.assertArrayEquals(preOrderDatas, new int[]{50, 25, 12, 14, 40, 35, 45, 44, 43, 42, 75, 55, 70, 60, 65, 63, 61, 90, 80, 85, 82, 88}); + binaryTree.delete(88); + preOrderDatas = binaryTree.traversal(); + Assert.assertArrayEquals(preOrderDatas, new int[]{50, 25, 12, 14, 40, 35, 45, 44, 43, 42, 75, 55, 70, 60, 65, 63, 61, 90, 80, 85, 82}); + + // 删除一个子节点的节点 + binaryTree.delete(70); + preOrderDatas = binaryTree.traversal(); + Assert.assertArrayEquals(preOrderDatas, new int[]{50, 25, 12, 14, 40, 35, 45, 44, 43, 42, 75, 55, 60, 65, 63, 61, 90, 80, 85, 82}); + binaryTree.delete(80); + preOrderDatas = binaryTree.traversal(); + Assert.assertArrayEquals(preOrderDatas, new int[]{50, 25, 12, 14, 40, 35, 45, 44, 43, 42, 75, 55, 60, 65, 63, 61, 90, 85, 82}); + + // 删除两个子节点的节点 + binaryTree.delete(40); + preOrderDatas = binaryTree.traversal(); + Assert.assertArrayEquals(preOrderDatas, new int[]{50, 25, 12, 14, 42, 35, 45, 44, 43, 75, 55, 60, 65, 63, 61, 90, 85, 82}); + binaryTree.delete(50); + preOrderDatas = binaryTree.traversal(); + Assert.assertArrayEquals(preOrderDatas, new int[]{55, 25, 12, 14, 42, 35, 45, 44, 43, 75, 60, 65, 63, 61, 90, 85, 82}); + } + + private void buildTree(int[] datas) { + binaryTree = new BinaryTree(); + for (int data : datas) { + binaryTree.add(data); + } + } +} \ No newline at end of file diff --git a/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/LinkListTest.java b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/LinkListTest.java new file mode 100644 index 0000000000..b690c69c94 --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/LinkListTest.java @@ -0,0 +1,81 @@ +package com.aaront.execrise.basic; + +import com.aaront.exercise.basic.Iterator; +import com.aaront.exercise.basic.LinkedList; +import org.junit.Assert; +import org.junit.Before; +import org.junit.Test; + +/** + * @author tonyhui + * @since 17/2/21 + */ +public class LinkListTest { + + private LinkedList linkedList = new LinkedList(); + + @Before + public void init() { + linkedList.add(1); + linkedList.add(2); + linkedList.add(3); + } + + @Test + public void testAdd() { + Assert.assertArrayEquals(linkedList.toArray(), new Object[]{1, 2, 3}); + } + + @Test + public void testAddIndex() { + linkedList.add(1, 10); + linkedList.add(0, 8); + Assert.assertArrayEquals(linkedList.toArray(), new Object[]{8, 1, 10, 2, 3}); + } + + @Test + public void testAddFirst() { + linkedList.addFirst(-1); + Assert.assertArrayEquals(linkedList.toArray(), new Object[]{-1, 1, 2, 3}); + } + + @Test + public void testAddLast() { + linkedList.addLast(99); + Assert.assertArrayEquals(linkedList.toArray(), new Object[]{1, 2, 3, 99}); + } + + @Test + public void testRemove() { + testAddIndex(); + linkedList.remove(1); + linkedList.remove(2); + linkedList.add(3, 3); + linkedList.add(1, 2); + Assert.assertArrayEquals(linkedList.toArray(), new Object[]{8, 2, 10, 3, 3}); + } + + @Test + public void testRemoveFirst() { + linkedList.removeFirst(); + linkedList.removeFirst(); + Assert.assertArrayEquals(linkedList.toArray(), new Object[]{3}); + } + + @Test + public void testRemoveLast() { + linkedList.removeLast(); + linkedList.removeLast(); + Assert.assertArrayEquals(linkedList.toArray(), new Object[]{1}); + } + + @Test + public void testIterator() { + Iterator iterator = linkedList.iterator(); + while (iterator.hasNext()) { + iterator.next(); + iterator.remove(); + } + Assert.assertArrayEquals(linkedList.toArray(), new Object[]{}); + } +} diff --git a/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/QueueTest.java b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/QueueTest.java new file mode 100644 index 0000000000..0035a353ec --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/QueueTest.java @@ -0,0 +1,33 @@ +package com.aaront.execrise.basic; + +import com.aaront.exercise.basic.Queue; +import org.junit.Assert; +import org.junit.Before; +import org.junit.Test; + +/** + * @author tonyhui + * @since 17/2/21 + */ +public class QueueTest { + private Queue queue = new Queue(); + + @Before + public void init() { + queue.enQueue(1); + queue.enQueue(2); + queue.enQueue(3); + } + + @Test + public void testEnqueue() { + Assert.assertArrayEquals(queue.toArray(), new Object[]{1, 2, 3}); + } + + @Test + public void testDequeue() { + queue.deQueue(); + queue.deQueue(); + Assert.assertArrayEquals(queue.toArray(), new Object[]{3}); + } +} diff --git a/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/StackTest.java b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/StackTest.java new file mode 100644 index 0000000000..3add6bcfdf --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/basic/StackTest.java @@ -0,0 +1,46 @@ +package com.aaront.execrise.basic; + +import com.aaront.exercise.basic.Stack; +import org.junit.Assert; +import org.junit.Before; +import org.junit.Test; + +/** + * @author tonyhui + * @since 17/2/21 + */ +public class StackTest { + + private Stack stack = new Stack(); + + @Before + public void init() { + stack.push(1); + stack.push(2); + stack.push(3); + } + + @Test + public void testPush() { + Assert.assertArrayEquals(stack.toArray(), new Object[]{1, 2, 3}); + } + + @Test + public void testPop() { + Object element1 = stack.pop(); + Assert.assertEquals(element1, 3); + Object element2 = stack.pop(); + Assert.assertEquals(element2, 2); + Assert.assertArrayEquals(stack.toArray(), new Object[]{1}); + } + + @Test + public void testPeek() { + Object element1 = stack.peek(); + Assert.assertEquals(element1, 3); + Object element2 = stack.peek(); + Assert.assertEquals(element2, 3); + Assert.assertArrayEquals(stack.toArray(), new Object[]{1, 2, 3}); + } + +} diff --git a/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericAllTest.java b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericAllTest.java new file mode 100644 index 0000000000..66c071cf5c --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericAllTest.java @@ -0,0 +1,19 @@ +package com.aaront.execrise.generic; + +import org.junit.runner.RunWith; +import org.junit.runners.Suite; + +/** + * @author tonyhui + * @since 17/2/22 + */ +@RunWith(Suite.class) +@Suite.SuiteClasses({ + GenericArrayListTest.class, + GenericLinkedListTest.class, + GenericQueueTest.class, + GenericStackTest.class, + GenericBinaryTreeTest.class +}) +public class GenericAllTest { +} diff --git a/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericArrayListTest.java b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericArrayListTest.java new file mode 100644 index 0000000000..8f97cbd3ea --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericArrayListTest.java @@ -0,0 +1,76 @@ +package com.aaront.execrise.generic; + +import com.aaront.exercise.generic.GenericArrayList; +import com.aaront.exercise.generic.GenericIterator; +import org.junit.Assert; +import org.junit.Before; +import org.junit.Test; + +/** + * @author tonyhui + * @since 17/2/22 + */ +public class GenericArrayListTest { + + private GenericArrayList arrayList = new GenericArrayList<>(); + + @Before + public void init() { + arrayList.add("1"); + arrayList.add("2"); + arrayList.add("3"); + } + + + @Test + public void testAdd() { + Assert.assertEquals(arrayList.get(0), "1"); + Assert.assertEquals(arrayList.get(1), "2"); + Assert.assertEquals(arrayList.get(2), "3"); + Assert.assertEquals(arrayList.size(), 3); + } + + @Test + public void testAddIndex() { + arrayList.add(1, "4"); + arrayList.add(2, "5"); + Assert.assertArrayEquals(arrayList.toArray(), new String[]{"1", "4", "5", "2", "3"}); + } + + @Test + public void testToArray() { + Assert.assertArrayEquals(arrayList.toArray(), new String[]{"1", "2", "3"}); + } + + @Test + public void testToGenericArray() { + Assert.assertArrayEquals(arrayList.toArray(new String[0]), new String[]{"1", "2", "3"}); + } + + @Test + public void testGet() { + Assert.assertEquals(arrayList.get(2), "3"); + Assert.assertEquals(arrayList.get(0), "1"); + Assert.assertEquals(arrayList.get(1), "2"); + } + + @Test + public void testRemove() { + testAddIndex(); + arrayList.remove(2); + arrayList.add(4, "10"); + arrayList.add(3, "9"); + Assert.assertArrayEquals(arrayList.toArray(), new String[]{"1", "4", "2", "9", "3", "10"}); + } + + @Test + public void testIterator() { + GenericIterator genericIterator = arrayList.iterator(); + while (genericIterator.hasNext()) { + genericIterator.next(); + genericIterator.remove(); + } + Assert.assertArrayEquals(arrayList.toArray(), new String[]{}); + } + +} diff --git a/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericBinaryTreeTest.java b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericBinaryTreeTest.java new file mode 100644 index 0000000000..41adbf6706 --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericBinaryTreeTest.java @@ -0,0 +1,75 @@ +package com.aaront.execrise.generic; + +import com.aaront.exercise.generic.GenericBinaryTree; +import org.junit.Assert; +import org.junit.Before; +import org.junit.Test; + +/** + * @author tonyhui + * @since 17/2/20 + */ +public class GenericBinaryTreeTest { + + @Before + public void init() { + String[] datas = new String[]{"9", "4", "5", "7", "1", "2", "3", "10", "17", "9"}; + GenericBinaryTree binaryTree = new GenericBinaryTree<>(); + for (String data : datas) { + binaryTree.add(data); + } + } + + @Test + public void testAdd() { + String[] datas = new String[]{"9", "4", "5", "7", "1", "2", "3", "10", "17", "9"}; + GenericBinaryTree binaryTree = new GenericBinaryTree<>(); + for (String data : datas) { + binaryTree.add(data); + } + String[] preorderDatas = binaryTree.traversal(GenericBinaryTree.PREORDER, new String[0]); + Assert.assertArrayEquals(preorderDatas, new String[]{"9", "4", "1", "2", "10", "17", "3", "5", "7", "9" }); + String[] inorderDatas = binaryTree.traversal(GenericBinaryTree.INORDER, new String[0]); + Assert.assertArrayEquals(inorderDatas, new String[]{"1", "10", "17", "2", "3", "4", "5", "7", "9", "9" }); + String[] postorderDatas = binaryTree.traversal(GenericBinaryTree.POSTORDER, new String[0]); + Assert.assertArrayEquals(postorderDatas, new String[]{"17", "10", "3", "2", "1", "7", "5", "4", "9", "9" }); + String[] hierarchicalDatas = binaryTree.traversal(GenericBinaryTree.HIERARCHICAL, new String[0]); + Assert.assertArrayEquals(hierarchicalDatas, new String[]{"9", "4", "9", "1", "5", "2", "7", "10", "3", "17" }); + } + + @Test + public void testDelete() { + GenericBinaryTree binaryTree = buildTree(new int[]{50, 25, 12, 11, 40, 14, 35, 45, 44, 43, 42, 75, 55, 70, 60, 65, 63, 61, 90, 80, 85, 82, 88}); + // 删除叶子节点 + binaryTree.delete(11); + Object[] preOrderDatas = binaryTree.traversal(); + Assert.assertArrayEquals(preOrderDatas, new Object[]{50, 25, 12, 14, 40, 35, 45, 44, 43, 42, 75, 55, 70, 60, 65, 63, 61, 90, 80, 85, 82, 88}); + binaryTree.delete(88); + preOrderDatas = binaryTree.traversal(); + Assert.assertArrayEquals(preOrderDatas, new Object[]{50, 25, 12, 14, 40, 35, 45, 44, 43, 42, 75, 55, 70, 60, 65, 63, 61, 90, 80, 85, 82}); + + // 删除一个子节点的节点 + binaryTree.delete(70); + preOrderDatas = binaryTree.traversal(); + Assert.assertArrayEquals(preOrderDatas, new Object[]{50, 25, 12, 14, 40, 35, 45, 44, 43, 42, 75, 55, 60, 65, 63, 61, 90, 80, 85, 82}); + binaryTree.delete(80); + preOrderDatas = binaryTree.traversal(); + Assert.assertArrayEquals(preOrderDatas, new Object[]{50, 25, 12, 14, 40, 35, 45, 44, 43, 42, 75, 55, 60, 65, 63, 61, 90, 85, 82}); + + // 删除两个子节点的节点 + binaryTree.delete(40); + preOrderDatas = binaryTree.traversal(); + Assert.assertArrayEquals(preOrderDatas, new Object[]{50, 25, 12, 14, 42, 35, 45, 44, 43, 75, 55, 60, 65, 63, 61, 90, 85, 82}); + binaryTree.delete(50); + preOrderDatas = binaryTree.traversal(); + Assert.assertArrayEquals(preOrderDatas, new Object[]{55, 25, 12, 14, 42, 35, 45, 44, 43, 75, 60, 65, 63, 61, 90, 85, 82}); + } + + private GenericBinaryTree buildTree(int[] datas) { + GenericBinaryTree binaryTree = new GenericBinaryTree<>(); + for (int data : datas) { + binaryTree.add(data); + } + return binaryTree; + } +} \ No newline at end of file diff --git a/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericLinkedListTest.java b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericLinkedListTest.java new file mode 100644 index 0000000000..513119fa6e --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericLinkedListTest.java @@ -0,0 +1,90 @@ +package com.aaront.execrise.generic; + +import com.aaront.exercise.generic.GenericLinkedList; +import com.aaront.exercise.generic.GenericIterator; +import org.junit.Assert; +import org.junit.Before; +import org.junit.Test; + +/** + * @author tonyhui + * @since 17/2/22 + */ +public class GenericLinkedListTest { + private GenericLinkedList linkedList = new GenericLinkedList<>(); + + @Before + public void init() { + linkedList.add("1"); + linkedList.add("2"); + linkedList.add("3"); + } + + @Test + public void testAdd() { + Assert.assertArrayEquals(linkedList.toArray(), new String[]{"1", "2", "3"}); + } + + @Test + public void testAddIndex() { + linkedList.add(1, "10"); + linkedList.add(0, "8"); + Assert.assertArrayEquals(linkedList.toArray(), new String[]{"8", "1", "10", "2", "3"}); + } + + @Test + public void testAddFirst() { + linkedList.addFirst("-1"); + Assert.assertArrayEquals(linkedList.toArray(), new String[]{"-1", "1", "2", "3"}); + } + + @Test + public void testAddLast() { + linkedList.addLast("99"); + Assert.assertArrayEquals(linkedList.toArray(), new String[]{"1", "2", "3", "99"}); + } + + @Test + public void testRemove() { + testAddIndex(); + linkedList.remove(1); + linkedList.remove(2); + linkedList.add(3, "3"); + linkedList.add(1, "2"); + Assert.assertArrayEquals(linkedList.toArray(), new String[]{"8", "2", "10", "3", "3"}); + } + + @Test + public void testRemoveFirst() { + linkedList.removeFirst(); + linkedList.removeFirst(); + Assert.assertArrayEquals(linkedList.toArray(), new String[]{"3"}); + } + + @Test + public void testRemoveLast() { + linkedList.removeLast(); + linkedList.removeLast(); + Assert.assertArrayEquals(linkedList.toArray(), new String[]{"1"}); + } + + @Test + public void testToArray() { + Assert.assertArrayEquals(linkedList.toArray(), new String[]{"1", "2", "3"}); + } + + @Test + public void testToGenericArray() { + Assert.assertArrayEquals(linkedList.toArray(new String[0]), new String[]{"1", "2", "3"}); + } + + @Test + public void testIterator() { + GenericIterator genericIterator = linkedList.iterator(); + while (genericIterator.hasNext()) { + genericIterator.next(); + genericIterator.remove(); + } + Assert.assertArrayEquals(linkedList.toArray(), new String[]{}); + } +} diff --git a/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericQueueTest.java b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericQueueTest.java new file mode 100644 index 0000000000..6b33a4b3e0 --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericQueueTest.java @@ -0,0 +1,33 @@ +package com.aaront.execrise.generic; + +import com.aaront.exercise.generic.GenericQueue; +import org.junit.Assert; +import org.junit.Before; +import org.junit.Test; + +/** + * @author tonyhui + * @since 17/2/21 + */ +public class GenericQueueTest { + private GenericQueue queue = new GenericQueue<>(); + + @Before + public void init() { + queue.enQueue("1"); + queue.enQueue("2"); + queue.enQueue("3"); + } + + @Test + public void testEnqueue() { + Assert.assertArrayEquals(queue.toArray(), new String[]{"1", "2", "3"}); + } + + @Test + public void testDequeue() { + queue.deQueue(); + queue.deQueue(); + Assert.assertArrayEquals(queue.toArray(), new String[]{"3"}); + } +} diff --git a/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericStackTest.java b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericStackTest.java new file mode 100644 index 0000000000..0b4b587704 --- /dev/null +++ b/group01/954958168/class01/BasicDataStructure/src/test/java/com/aaront/execrise/generic/GenericStackTest.java @@ -0,0 +1,46 @@ +package com.aaront.execrise.generic; + +import com.aaront.exercise.generic.GenericStack; +import org.junit.Assert; +import org.junit.Before; +import org.junit.Test; + +/** + * @author tonyhui + * @since 17/2/21 + */ +public class GenericStackTest { + + private GenericStack stack = new GenericStack<>(); + + @Before + public void init() { + stack.push("1"); + stack.push("2"); + stack.push("3"); + } + + @Test + public void testPush() { + Assert.assertArrayEquals(stack.toArray(), new String[]{"1", "2", "3"}); + } + + @Test + public void testPop() { + String element1 = stack.pop(); + Assert.assertEquals(element1, "3"); + String element2 = stack.pop(); + Assert.assertEquals(element2, "2"); + Assert.assertArrayEquals(stack.toArray(), new String[]{"1"}); + } + + @Test + public void testPeek() { + String element1 = stack.peek(); + Assert.assertEquals(element1, "3"); + String element2 = stack.peek(); + Assert.assertEquals(element2, "3"); + Assert.assertArrayEquals(stack.toArray(), new String[]{"1", "2", "3"}); + } + +}