2322. 移除树中边的最小分数
Hard | Array, Bit Manipulation, Tree, Depth-First Search
Bit Manipulation
2351. 第一个出现两次的字母
Easy | Hash Table, String, Bit Manipulation, Counting
2354. 优秀数对的数目
Hard | Array, Hash Table, Binary Search, Bit Manipulation
2401. 最长优美子数组
Medium | Array, Bit Manipulation, Sliding Window
2411. 具有最大按位或的最小子数组
Medium | Array, Binary Search, Bit Manipulation, Sliding Window
2419. 最大按位与的最长子数组
Medium | Array, Bit Manipulation, Brainteaser
2425. 所有数对按位异或后的按位异或
Medium | Array, Bit Manipulation, Brainteaser
2429. 最小化异或值
Medium | Greedy, Bit Manipulation
2433. 找到原数组的前缀异或
Medium | Array, Bit Manipulation
2438. 2的幂次方范围乘积查询
Medium | Array, Bit Manipulation, Prefix Sum
2506. 统计相似字符串对的数目
Easy | Array, Hash Table, String, Bit Manipulation, Counting
2527. 数组的异或美丽值
Medium | Array, Math, Bit Manipulation
2546. 应用按位运算使字符串相等
Medium | String, Bit Manipulation
2564. 子字符串异或查询
Medium | Array, Hash Table, String, Bit Manipulation
2568. 最小不可能的OR值
Medium | Array, Bit Manipulation, Brainteaser
2571. 使整数减为 0 的最少操作次数
Medium | Dynamic Programming, Greedy, Bit Manipulation
2572. 无平方子集的数目
Medium | Array, Math, Dynamic Programming, Bit Manipulation, Number Theory, Bitmask
2588. 统计美丽子数组的数目
Medium | Array, Hash Table, Bit Manipulation, Prefix Sum
2595. 奇偶位数
Easy | Bit Manipulation
1284. 将二进制矩阵转换为零矩阵的最小翻转次数
Hard | Array, Hash Table, Bit Manipulation, Breadth-First Search, Matrix