vault backup: 2025-05-11 11:19:59

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asskicker0214 2025-05-11 11:19:59 +08:00
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- [ ] [106. 从中序与后序遍历序列构造二叉树 - 力扣LeetCode](https://leetcode.cn/problems/construct-binary-tree-from-inorder-and-postorder-traversal/)
- [ ] [501. 二叉搜索树中的众数 - 力扣LeetCode](https://leetcode.cn/problems/find-mode-in-binary-search-tree/)
- [ ] [450. 删除二叉搜索树中的节点 - 力扣LeetCode](https://leetcode.cn/problems/delete-node-in-a-bst/)
- [ ] [40. 组合总和 II - 力扣LeetCode](https://leetcode.cn/problems/combination-sum-ii/) 重点是结果去重,技巧
1. 先对 candidates 排序,这样就不会出现 `[[1,2,5], [1,5,2]]` 的情况
2. 在每一个 epoch 中,循环时跳过 visited 元素,这样就不会出现 `[[1,2,5], [1,2,5]]` 的情况