常见排序算法的实现性能比较，包括快排，归并、选择、插入、冒泡和堆排序-The realization of the common sorting algorithm performance, including fast row, merge, select, insert, bubbling and heap sort

求两个字符串的公共子序列LCS，总共有三种可选的方法，并附带算法的性能分析-Seek common subsequence of two strings LCS, a total of three alternative methods, and comes algorithm performance analysis