## 递归

| \# | 题名 | 题解 | 通过率 | 难度 | 出现频率   |
|------|----------------------|-----|--------|----|--------|
|726|[原子的数量](https://leetcode-cn.com/problems/number-of-atoms)   |[12](https://leetcode-cn.com/problems/number-of-atoms/solution)|42.8%|困难|39.25%|
|776|[拆分二叉搜索树](https://leetcode-cn.com/problems/split-bst)   |[10](https://leetcode-cn.com/problems/split-bst/solution)|50.0%|中等|27.78%|
|698|[划分为k个相等的子集](https://leetcode-cn.com/problems/partition-to-k-equal-sum-subsets)   |[16](https://leetcode-cn.com/problems/partition-to-k-equal-sum-subsets/solution)|40.4%|中等|27.65%|
|625|[最小因式分解](https://leetcode-cn.com/problems/minimum-factorization)   |[10](https://leetcode-cn.com/problems/minimum-factorization/solution)|32.1%|中等|26.4%|
|544|[输出比赛匹配对](https://leetcode-cn.com/problems/output-contest-matches)   |[12](https://leetcode-cn.com/problems/output-contest-matches/solution)|64.7%|中等|22.82%|
|938|[二叉搜索树的范围和](https://leetcode-cn.com/problems/range-sum-of-bst)   |[73](https://leetcode-cn.com/problems/range-sum-of-bst/solution)|75.5%|简单|16.56%|
|687|[最长同值路径](https://leetcode-cn.com/problems/longest-univalue-path)   |[19](https://leetcode-cn.com/problems/longest-univalue-path/solution)|38.1%|简单|15.56%|
|247|[中心对称数 II](https://leetcode-cn.com/problems/strobogrammatic-number-ii)   |[15](https://leetcode-cn.com/problems/strobogrammatic-number-ii/solution)|46.5%|中等|15.26%|
|894|[所有可能的满二叉树](https://leetcode-cn.com/problems/all-possible-full-binary-trees)   |[13](https://leetcode-cn.com/problems/all-possible-full-binary-trees/solution)|72.9%|中等|10.33%|
|1137|[第 N 个泰波那契数](https://leetcode-cn.com/problems/n-th-tribonacci-number)   |[70](https://leetcode-cn.com/problems/n-th-tribonacci-number/solution)|52.4%|简单|10.22%|
|783|[二叉搜索树结点最小距离](https://leetcode-cn.com/problems/minimum-distance-between-bst-nodes)   |[41](https://leetcode-cn.com/problems/minimum-distance-between-bst-nodes/solution)|51.1%|简单|8.7%|
|794|[有效的井字游戏](https://leetcode-cn.com/problems/valid-tic-tac-toe-state)   |[19](https://leetcode-cn.com/problems/valid-tic-tac-toe-state/solution)|32.1%|中等|&nbsp;|
|779|[第K个语法符号](https://leetcode-cn.com/problems/k-th-symbol-in-grammar)   |[30](https://leetcode-cn.com/problems/k-th-symbol-in-grammar/solution)|42.3%|中等|&nbsp;|
|761|[特殊的二进制序列](https://leetcode-cn.com/problems/special-binary-string)   |[4](https://leetcode-cn.com/problems/special-binary-string/solution)|54.2%|困难|&nbsp;|
|248|[中心对称数 III](https://leetcode-cn.com/problems/strobogrammatic-number-iii)   |[13](https://leetcode-cn.com/problems/strobogrammatic-number-iii/solution)|43.3%|困难|&nbsp;|

