Maximum Depth of Binary Tree

Maximum Depth of Binary Tree 

Given a binary tree, find its maximum depth.

The maximum depth is the number of nodes along the longest path from the root node down to the farthest leaf node.

 

/**
* Definition for binary tree
* public class TreeNode {
* int val;
* TreeNode left;
* TreeNode right;
* TreeNode(int x) { val = x; }
* }
*/
public class Solution {
  public int maxDepth(TreeNode root) {
    if(root == null)
      return 0;
    else {
      int depthLeft = maxDepth(root.left) + 1;
      int depthRight = maxDepth(root.right) + 1;
      if(depthLeft >= depthRight)
        return depthLeft;
      else
        return depthRight;
    }
  }
}

posted @ 2014-04-01 21:36  boole  阅读(77)  评论(0)    收藏  举报