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
Medium
3084. 统计以给定字符开头和结尾的子字符串数目
Medium | Math, String, Counting
3085. 使字符串 K-特殊的最少删除次数
Medium | Hash Table, String, Greedy, Sorting, Counting
3091. 使数组和大于等于 k 的最少操作次数
Medium | Math, Greedy, Enumeration
3092. 最频繁的 IDs
Medium | Array, Hash Table, Heap (Priority Queue), Ordered Set
3096. 获得更多分数所需的最少层数
Medium | Array, Prefix Sum
3097. 与 K 至少相等的最短子数组 II
Medium | Array, Bit Manipulation, Sliding Window
3100. 水瓶 II
Medium | Math, Simulation
3101. 计算交替子数组
Medium | Array, Math
3106. 约束条件下字典序最小的字符串
Medium | String, Greedy