LeetCode 104. 二叉树的最大深度(Maximum Depth of Binary Tree)
104. 二叉树的最大深度
104. Maximum Depth of Binary Tree
题目描述
给定一个二叉树,找出其最大深度。
二叉树的深度为根节点到最远叶子节点的最长路径上的节点数。
说明: 叶子节点是指没有子节点的节点。
LeetCode104. Maximum Depth of Binary Tree
示例:
```
3
/ \
9 20
/ \
15 7
```
返回它的最大深度 3。
Java 实现
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;
}
return Math.max(maxDepth(root.left), maxDepth(root.right)) + 1;
}
}
相似题目
参考资料
- https://leetcode-cn.com/problems/maximum-depth-of-binary-tree/
- https://leetcode.com/problems/maximum-depth-of-binary-tree/
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