二叉树

group15/1503_1311822904/myCollection/src/BinaryTreeNode.java

@@ -0,0 +1,70 @@
+import java.util.Objects;
+
+public class BinaryTreeNode {
+
+	private Integer data;
+	private BinaryTreeNode left;
+	private BinaryTreeNode right;
+
+	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;
+	}
+	//TODO
+    public BinaryTreeNode insert(Integer o){
+      if(data==null){
+          data=o;
+          return this;
+      }
+
+        BinaryTreeNode b=new BinaryTreeNode();
+        b.setData(o);
+
+       if(Objects.equals(data, o)){
+           return this;
+       }
+      if(data<o){
+          if(left==null){
+              left=b;
+              return b;
+          }
+          left.insert(o);
+      }
+      if(data>o){
+          if(right==null){
+              right=b;
+              return b;
+          }
+          right.insert(o);
+      }
+      return b;
+    }
+
+    public void showAll(){
+	    if(right!=null){
+            right.showAll();
+        }
+        System.out.print(data+" ");
+	    if(left!=null){
+	        left.showAll();
+        }
+
+    }
+
+
+
+}

group15/1503_1311822904/myCollection/test/BinaryTreeNodeTest.java

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+import org.junit.Test;
+
+/**
+ * Created by Administrator on 2017/2/25.
+ */
+public class BinaryTreeNodeTest {
+
+
+    @Test
+    public void showAll() throws Exception {
+        BinaryTreeNode b=new BinaryTreeNode();
+        b.insert(4);
+        b.insert(5);
+       b.insert(-1);
+       b.insert(44);
+        b.insert(34);
+        b.insert(49);
+        b.showAll();
+    }
+
+}