leetcode104 Maximum Depth
题意:二叉树最大深度
思路:递归,但是不知道怎么回事直接在return里面计算总是报超时,用俩变量就可以A···奇怪,没想通
代码:
int maxDepth(TreeNode* root) {
if(!root)
return ;
int l = maxDepth(root->left)+;
int r = maxDepth(root->right)+;
return (l > r) ? l : r;
}
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