Java岗位面试真题宝典 (牛客)
Java岗位面试真题宝典① NC72二叉树的镜像输入:root = [4,2,7,1,3,6,9]输出:[4,7,2,9,6,3,1]解题思路dfs的建树时候先遍历右边即可题解代码class Solution {public: TreeNode* mirrorTree(TreeNode* root) { if(root == NULL) return NULL; TreeNode* top = new TreeNode(root -> v
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2021-06-21 17:12:40 ·
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