3712. 频率能被 K 整除的元素之和
Easy | Array, Hash Table, Counting
Hash Table
3713. 最长平衡子字符串 I
Medium | Hash Table, String, Counting, Enumeration
3714. 最长平衡子串 II
Medium | Hash Table, String, Prefix Sum
3715. 完全平方祖先节点的和
Hard | Array, Hash Table, Math, Tree, Depth-First Search, Counting, Number Theory
3718. 缺失的最小 K 的倍数
Easy | Array, Hash Table
3719. 最长平衡子数组 I
Medium | Array, Hash Table, Divide and Conquer, Segment Tree, Prefix Sum
3720. 字典序最小的大于目标的排列
Medium | Hash Table, String, Greedy, Counting, Enumeration
3721. 最长平衡子数组 II
Hard | Array, Hash Table, Divide and Conquer, Segment Tree, Prefix Sum
3728. 边界和内部和相等的稳定子数组
Medium | Array, Hash Table, Prefix Sum
3729. 统计有序数组中能被K整除的不同子数组数量
Hard | Array, Hash Table, Prefix Sum