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BinaryTreeDepth.java

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/**

* 剑指Offer，树的深度

*/

/**

public class TreeNode {

int val = 0;

TreeNode left = null;

TreeNode right = null;

public TreeNode(int val) {

this.val = val;

}

}

*/

public class BinaryTreeDepth {

public int TreeDepth(TreeNode root) {

if (root == null) {

return 0;

}

int leftTreeDepth = TreeDepth(root.left);

int rightTreeDepth = TreeDepth(root.right);

if (leftTreeDepth > rightTreeDepth) {

return leftTreeDepth + 1;

}else {

return rightTreeDepth + 1;

}

}

}