【Leetcode】:104. Maximum Depth of Binary Tree 问题 in JAVA
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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 a binary tree node. * 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; } if (root.left == null && root.right == null) { return 1; } int l = maxDepth(root.left); int r = maxDepth(root.right); return l>=r ? l+1 : r+1; }}
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