- [ ] [432. 全 O(1) 的数据结构](https://leetcode.cn/problems/all-oone-data-structure/description/) - [ ] [460. LFU 缓存](https://leetcode.cn/problems/lfu-cache/) - [ ] [1206. 设计跳表](https://leetcode.cn/problems/design-skiplist/) - [ ] [2296. 设计一个文本编辑器](https://leetcode.cn/problems/design-a-text-editor/)
