1259131938第一周作业

汪耀进：第一周数据结构作业

group06/1259131938/JavaLearning/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

group06/1259131938/JavaLearning/.gitignore

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+/bin/

group06/1259131938/JavaLearning/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>JavaLearning</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

group06/1259131938/JavaLearning/.settings/org.eclipse.jdt.core.prefs

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+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.6
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=1.6
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.source=1.6

group06/1259131938/JavaLearning/src/com/coding/basic/BinaryTreeNode.java

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+package com.coding.basic;
+
+public class BinaryTreeNode {
+
+	private Object data;
+	private BinaryTreeNode left;
+	private BinaryTreeNode right;
+
+	public Object getData() {
+		return data;
+	}
+	public void setData(Object 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;
+	}
+
+	public BinaryTreeNode insert(Object o){
+		return  null;
+	}
+
+}

group06/1259131938/JavaLearning/src/com/coding/basic/Iterator.java

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+package com.coding.basic;
+
+public interface Iterator {
+	public boolean hasNext();
+	public Object next();
+
+}

group06/1259131938/JavaLearning/src/com/coding/basic/List.java

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+package com.coding.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();
+}

group06/1259131938/JavaLearning/src/com/coding/basic/MyArrayList.java

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+package com.coding.basic;
+
+/**
+ * @deprecated 用数组实现list
+ * @author wang
+ *
+ */
+public class MyArrayList implements List {
+
+	private int size = 0;
+
+	private Object[] elementData = new Object[100];
+
+	public void add(Object o){
+		// 确保数组大小
+		ensureCapacity(size + 1);
+		// 数组赋值并使得size+1；
+		elementData[size ++] = o;
+		size ++;
+	}
+
+	/**
+	 * 确保数组不越界，否则就扩容；
+	 * @param minCapacity	list的大小；
+	 */
+	public void ensureCapacity(int minCapacity) {
+		int oldCapacity = elementData.length;
+		int newCapacity = (oldCapacity / 3) * 2 + 1;
+		if (minCapacity > newCapacity) {
+			// 对数组扩容
+			Object[] newDate = new Object[newCapacity];
+			System.arraycopy(elementData, 0, newDate, 0, oldCapacity);
+			elementData = newDate;
+		}
+	}
+
+	public void add(int index, Object o){
+		// 对index进行校验：
+		rangeCheck(index);
+		ensureCapacity(size + 1);
+		System.arraycopy(elementData, index, elementData, index + 1, size - index);
+		elementData[index] = o;
+		size ++;
+	}
+
+	/**
+	 * 边界检查：
+	 * @param index
+	 */
+	private void rangeCheck(int index) {
+		if (index < 0 || index >= size) {
+			throw new IndexOutOfBoundsException("size" + size + ", index:"
+					+ index);
+		}
+	}
+
+	public Object get(int index){
+		rangeCheck(index);
+		return elementData[index];
+	}
+
+	public Object remove(int index){
+		rangeCheck(index);
+		Object oldValue = elementData[index];
+		System.arraycopy(elementData, index, elementData, index - 1, size - index);
+		return oldValue;
+	}
+
+	public int size(){
+		return size;
+	}
+
+	public Iterator iterator(){
+		return null;
+	}
+
+}

group06/1259131938/JavaLearning/src/com/coding/basic/MyLinkedList.java

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+package com.coding.basic;
+
+
+public class MyLinkedList implements List {
+
+	private Node headNode;
+
+	private Node endNode;
+
+	private int size;
+
+	public void add(Object o){
+		add(size,o);
+	}
+	public void add(int index , Object o){
+		addBefore(getNode(index),o);
+	}
+
+	// 执行添加元素：
+	private void addBefore(Node node,Object o) {
+		Node newNode = new Node(o, node.prev, node.next);
+		newNode.prev.next = newNode;
+		newNode.next.prev = newNode;
+		size ++;
+	}
+
+	// 获得元素；
+	private Node getNode(int index) {
+		Node rtnNode;
+		if (index > size || index < 0) {
+			throw new IndexOutOfBoundsException();
+		}
+		if (index < size / 2) {
+			rtnNode = headNode.next;
+			for (int i = 0; i < index; i++) {
+				rtnNode = rtnNode.next;
+			}
+		} else {
+			rtnNode = endNode;
+			for (int i = size; i > index; i--) {
+				rtnNode = rtnNode.prev;
+			}
+		}
+		return rtnNode;
+	}
+
+	public Object get(int index){
+		return getNode(index).data;
+	}
+	public Object remove(int index){
+		return remove(getNode(index));
+	}
+
+	private Object remove(Node node) {
+		node.prev.next = node.next;
+		node.next.prev = node.prev;
+		size --;
+		return node.data;
+	}
+	public int size(){
+		return size;
+	}
+
+	public void addFirst(Object o){
+		add(headNode.prev);
+	}
+	public void addLast(Object o){
+		add(endNode.next);
+	}
+	public Object removeFirst(){
+		remove(headNode);
+		return headNode.data;
+	}
+	public Object removeLast(){
+		remove(endNode);
+		return endNode.data;
+	}
+	public Iterator iterator(){
+		return null;
+	}
+
+	public boolean isEmpty(){
+		return size == 0;
+	}
+
+	private static  class Node{
+		//当前元素，下一个及前一个；
+		Object data;
+		Node next;
+		Node prev;
+		public Node(Object data,Node prev, Node next) {
+			this.data = data;
+			this.next = next;
+			this.prev = prev;
+		}
+	}
+}

group06/1259131938/JavaLearning/src/com/coding/basic/MyStack.java

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+package com.coding.basic;
+
+public class MyStack {
+	private MyArrayList elementData = new MyArrayList();
+
+	/**
+	 * 入栈
+	 * @param o
+	 */
+	public void push(Object o){	
+		elementData.add(o);
+	}
+
+	/**
+	 * 出栈
+	 * @return
+	 */
+	public Object pop(){
+		Object oldValue = elementData.get(elementData.size());
+		elementData.remove(elementData.size());
+		return oldValue;
+	}
+	/**
+	 * 查看栈顶元素；
+	 * @return
+	 */
+	public Object peek(){
+		return elementData.get(elementData.size());
+	}
+	public boolean isEmpty(){
+		return elementData.size() == 0;
+	}
+	public int size(){
+		return elementData.size();
+	}
+}

group06/1259131938/JavaLearning/src/com/coding/basic/Queue.java

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+package com.coding.basic;
+
+public class Queue {
+	MyLinkedList elementData = new MyLinkedList();
+	public void enQueue(Object o){	
+		elementData.add(o);
+	}
+
+	public Object deQueue(){
+		return elementData.remove(elementData.size());
+	}
+
+	public boolean isEmpty(){
+		return elementData.size() == 0;
+	}
+
+	public int size(){
+		return elementData.size();
+	}
+}

group06/1259131938/RemoteSystemsTempFiles/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>RemoteSystemsTempFiles</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.rse.ui.remoteSystemsTempNature</nature>
+	</natures>
+</projectDescription>