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.


Solution

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* Definition for a binary tree node.
* public class TreeNode {
* int val;
* TreeNode left;
* TreeNode right;
* TreeNode(int x) { val = x; }
* }
*/
public class {
public int maxDepth(TreeNode root) {
if(root==null) return 0;
return 1+Math.max(maxDepth(root.left),maxDepth(root.right));
}
}