2023每日刷题(十九)
Leetcode—110.平衡二叉树
实现代码
/*** Definition for a binary tree node.* struct TreeNode {* int val;* struct TreeNode *left;* struct TreeNode *right;* };*/
int preFunc(struct TreeNode* root) {if(root == NULL) {return 0;}int left = preFunc(root->left);if(left == -1) {return -1;}int right = preFunc(root->right);if(right == -1 || abs(right - left) > 1) {return -1;}return (left > right ? left : right) + 1;
}bool isBalanced(struct TreeNode* root) {return preFunc(root) != -1;
}
运行结果
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