3503. 子串连接后的最长回文串 I
Medium | Two Pointers, String, Dynamic Programming, Enumeration
String
3504. 字符串拼接后的最长回文串 II
Hard | Two Pointers, String, Dynamic Programming
3517. 最小回文重排 I
Medium | String, Sorting, Counting Sort
3518. 最小回文重排 II
Hard | Hash Table, Math, String, Combinatorics, Counting
3519. 计算非递减数字的数量
Hard | Math, String, Dynamic Programming
3522. 执行指令后计算分数
Medium | Array, Hash Table, String, Simulation
3527. 寻找最常见的回复
Medium | Array, Hash Table, String, Counting
3529. 统计水平和垂直子串重叠的单元格数量
Medium | Array, String, Rolling Hash, String Matching, Matrix, Hash Function
3541. 查找最频繁的元音和辅音
Easy | Hash Table, String, Counting
3545. 最多 K 个不同字符的最少删除次数
Easy | Hash Table, String, Greedy, Sorting, Counting