给定一个数组，通过快速排序法，把数组里面的数按照从小到大进行排序，即递增序列。然后用lcsLength函数找出最长递增子序列。-Given an array by quicksort method, the number inside the array from small to large in accordance with the sort, that is, incremental sequence. LcsLength function and then find the longe