3016. 输入单词的最少按键次数 II
Medium | Hash Table, String, Greedy, Sorting, Counting
String
3019. 改变按键的数量
Easy | String
3029. 使单词恢复初始状态所需的最短时间 I
Medium | String, Rolling Hash, String Matching, Hash Function
3031. 将单词恢复到初始状态的最少时间 II
Hard | String, Rolling Hash, String Matching, Hash Function
3035. 操作后的最大回文数
Medium | Array, Hash Table, String, Greedy, Sorting, Counting
3042. 统计前缀和后缀对 I
Easy | Array, String, Trie, Rolling Hash, String Matching, Hash Function
3043. 寻找最长公共前缀的长度
Medium | Array, Hash Table, String, Trie
3045. 统计前缀和后缀对 II
Hard | Array, String, Trie, Rolling Hash, String Matching, Hash Function
3076. 数组中最短的不同子字符串
Medium | Array, Hash Table, String, Trie
3081. 替换字符串中的问号使其值最小
Medium | Hash Table, String, Greedy, Sorting, Heap (Priority Queue), Counting