2856. 配对移除后的最小数组长度
Medium | Array, Hash Table, Two Pointers, Binary Search, Greedy, Counting
Counting
2870. 使数组为空的最少操作次数
Medium | Array, Hash Table, Greedy, Counting
2960. 计算测试后的设备数量
Easy | Array, Simulation, Counting
2001. 可互换矩形的组数
Medium | Array, Hash Table, Math, Counting, Number Theory
2013. 检测正方形
Medium | Array, Hash Table, Design, Counting, Data Stream
2029. 石子游戏 IX
Medium | Array, Math, Greedy, Counting, Game Theory
2048. 下一个数值平衡数
Medium | Hash Table, Math, Backtracking, Counting, Enumeration
2053. 数组中的第 K 个不同字符串
Easy | Array, Hash Table, String, Counting
2068. 检查两个字符串是否几乎相等
Easy | Hash Table, String, Counting
2085. 统计出现一次的公共字符串
Easy | Array, Hash Table, String, Counting