1. 排序

快速排序

AcWing 785. 快速排序 https://www.acwing.com/solution/content/69200/
AcWing 786. 第k个数 https://www.acwing.com/solution/content/72401/

归并排序

AcWing 787. 归并排序 https://www.acwing.com/solution/content/71880/
AcWing 788. 逆序对的数量 https://www.acwing.com/solution/content/72406/

2. 二分

整数二分
AcWing 789. 数的范围 https://www.acwing.com/solution/content/71908/
浮点数二分
AcWing 790. 数的三次方根 https://www.acwing.com/solution/content/72022/

3. 高精度

AcWing 791. 高精度加法 https://www.acwing.com/solution/content/72099/
AcWing 792. 高精度减法 https://www.acwing.com/solution/content/72109/
AcWing 793. 高精度乘法 https://www.acwing.com/solution/content/72121/
AcWing 794. 高精度除法 https://www.acwing.com/solution/content/72192/

4. 前缀和与差分

前缀和
一维: AcWing 795. 前缀和 https://www.acwing.com/solution/content/72246/
二维: AcWing 796. 子矩阵的和 https://www.acwing.com/solution/content/72252/

差分
一维：AcWing 797. 差分 https://www.acwing.com/solution/content/72256/
二维：AcWing 798. 差分矩阵 https://www.acwing.com/solution/content/72361/

5. 双指针算法

AcWing 799. 最长连续不重复子序列 https://www.acwing.com/solution/content/73197/
AcWing 800. 数组元素的目标和 https://www.acwing.com/solution/content/73667/
AcWing 2816. 判断子序列 https://www.acwing.com/solution/content/74599/

6. 位运算

AcWing 801. 二进制中1的个数 https://www.acwing.com/solution/content/73561/

7. 离散化

AcWing 802. 区间和 https://www.acwing.com/solution/content/73563/

8. 区间合并

AcWing 803. 区间合并 https://www.acwing.com/solution/content/73570/