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Copy pathTree2.cpp
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53 lines (34 loc) · 975 Bytes
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//https://leetcode.com/problems/balanced-binary-tree/
//110. 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 value = true;
int Utilsbalanced(TreeNode* root ){
if(root == NULL)
return 0;
int lh = Utilsbalanced(root->left);
int rh = Utilsbalanced(root->right);
if(abs(lh-rh)>1){
value = false;
}
int res = max(lh,rh);
return res+1;
}
bool isBalanced(TreeNode* root) {
value = true;
int res = Utilsbalanced(root);
//cout<<value<<endl;
return value;
}
};