Binary Tree: Balanced Binary Tree
/**
* Definition for a binary tree node.
* struct TreeNode {
* int val;
* TreeNode *left;
* TreeNode *right;
* TreeNode() : val(0), left(nullptr), right(nullptr) {}
* TreeNode(int x) : val(x), left(nullptr), right(nullptr) {}
* TreeNode(int x, TreeNode *left, TreeNode *right) : val(x), left(left), right(right) {}
* };
*/
class Solution {
public:
bool isBalanced(TreeNode* root) {
if(root == NULL)
return true;
int left = getDepth(root->left);
int right = getDepth(root->right);
return abs(left - right) <= 1 && isBalanced(root->left) && isBalanced(root->right);
}
int getDepth(TreeNode* root)
{
if(root == NULL)
return 0;
int left = getDepth(root->left);
int right = getDepth(root->right);
return max(left, right) + 1;
}
};