3737. 统计具有主要元素的子数组数量 I
Medium | Array, Hash Table, Divide and Conquer, Segment Tree, Merge Sort, Counting, Prefix Sum
Merge Sort
3739. 计算多数元素子数组 II
Hard | Array, Hash Table, Divide and Conquer, Segment Tree, Merge Sort, Prefix Sum
2179. 统计数组中的好三元组
Hard | Array, Binary Search, Divide and Conquer, Binary Indexed Tree, Segment Tree, Merge Sort, Ordered Set
2426. 满足不等式的数对数目
Hard | Array, Binary Search, Divide and Conquer, Binary Indexed Tree, Segment Tree, Merge Sort, Ordered Set
1649. 通过指令创建有序数组
Hard | Array, Binary Search, Divide and Conquer, Binary Indexed Tree, Segment Tree, Merge Sort, Ordered Set
912. 排序数组
Medium | Array, Divide and Conquer, Sorting, Heap (Priority Queue), Merge Sort, Bucket Sort, Radix Sort, Counting Sort
493. 翻转对
Hard | Array, Binary Search, Divide and Conquer, Binary Indexed Tree, Segment Tree, Merge Sort, Ordered Set
327. 区间和的个数
Hard | Array, Binary Search, Divide and Conquer, Binary Indexed Tree, Segment Tree, Merge Sort, Ordered Set
148. 排序链表
Medium | Linked List, Two Pointers, Divide and Conquer, Sorting, Merge Sort
23. 合并K个升序链表
Hard | Linked List, Divide and Conquer, Heap (Priority Queue), Merge Sort