//快排
2022.4.19 7 剑指21.调整数组顺序使奇数位于偶数前面 https://leetcode-cn.com/problems/diao-zheng-shu-zu-shun-xu-shi-qi-shu-wei-yu-ou-shu-qian-mian-lcof/
//归并排序
2022.5.13 9 剑指51.数组中的逆序对 https://leetcode.cn/problems/shu-zu-zhong-de-ni-xu-dui-lcof/
//稳定排序
2022.7.18 7 302周赛.裁剪数字后查询第 K 小的数字 https://leetcode.cn/problems/query-kth-smallest-trimmed-number/
