1481. 删除 K 个元素后的最少唯一整数个数
Medium | Array, Hash Table, Greedy, Sorting, Counting
Counting
1497. 检查数组对是否可以被 k 整除
Medium | Array, Hash Table, Counting
1512. 好数对的数目
Easy | Array, Hash Table, Math, Counting
1519. 子树中标签相同的节点数
Medium | Hash Table, Tree, Depth-First Search, Breadth-First Search, Counting
1603. 设计停车系统
Easy | Design, Simulation, Counting
1655. 分配重复整数
Hard | Array, Hash Table, Dynamic Programming, Backtracking, Bit Manipulation, Counting, Bitmask
1704. 判断字符串的两半是否相似
Easy | String, Counting
1726. 相同乘积的元组
Medium | Array, Hash Table, Counting
1737. 修改最少字符使满足三个条件之一
Medium | Hash Table, String, Counting, Prefix Sum
1742. 盒子中球的最大数量
Easy | Hash Table, Math, Counting