1763. 最长优美子字符串
Easy | Hash Table, String, Divide and Conquer, Bit Manipulation, Sliding Window
Hash Table
1775. 用最少操作次数使两个数组的和相等
Medium | Array, Hash Table, Greedy, Counting
1781. 所有子字符串美丽值之和
Medium | Hash Table, String, Counting
1782. 统计点对的数量
Hard | Array, Hash Table, Two Pointers, Binary Search, Graph Theory, Sorting, Counting
1790. 检查一次字符串交换能否使两个字符串相等
Easy | Hash Table, String, Counting
1796. 字符串中第二大的数字
Easy | Hash Table, String
1797. 设计身份验证管理器
Medium | Hash Table, Linked List, Design, Doubly-Linked List
1807. 计算字符串中括号对的值
Medium | Array, Hash Table, String
1814. 数组中的好数对
Medium | Array, Hash Table, Math, Counting
1817. 找到用户的活跃分钟数
Medium | Array, Hash Table