LeetCode@Tree_110_Balanced_Binary_Tree

110. Balanced Binary Tree

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• Difficulty: Easy
• Contributor: LeetCode

Given a binary tree, determine if it is height-balanced.

For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of every node never differ by more than 1.

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java:

/** * Definition for a binary tree node. * public class TreeNode { *     int val; *     TreeNode left; *     TreeNode right; *     TreeNode(int x) { val = x; } * } */public class Solution {   public boolean isBalanced(TreeNode root){if(root == null){return true;}else{return Math.abs(maxDepth(root.right) - maxDepth(root.left))<=1 && isBalanced(root.right)&& isBalanced(root.left);}}public int maxDepth(TreeNode root){int h = 0;if (root == null){return h;}else{return 1 + Math.max(maxDepth(root.left), maxDepth(root.right));}}}