104. Maximum Depth of Binary Tree

104. 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 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; return 1 + Math.max(maxDepth(root.left), maxDepth(root.right)); }}

/** * 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) { return root == null ? 0 : 1 + Math.max(maxDepth(root.left), maxDepth(root.right)); }}

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