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
3107. 使数组中位数等于 K 的最少操作数
Medium | Array, Greedy, Sorting
3111. 覆盖点的最小矩形数量
Medium | Array, Greedy, Sorting
3112. 访问消失节点的最短时间
Medium | Array, Graph Theory, Heap (Priority Queue), Shortest Path
3115. 最大质数差
Medium | Array, Math, Number Theory
3121. 特殊字符计数 II
Medium | Hash Table, String
3122. 满足条件的最小操作数
Medium | Array, Dynamic Programming, Matrix
3128. 直角三角形
Medium | Array, Hash Table, Math, Combinatorics, Counting
3129. 寻找所有可能的稳定二进制数组 I
Medium | Dynamic Programming, Prefix Sum
3132. 找到数组中被加数 II
Medium | Array, Two Pointers, Sorting, Enumeration
3133. 最小数组末尾值
Medium | Bit Manipulation