摘要：
题目： Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical. 阅读全文
摘要：
class Solution { public: int quicksort(vector& nums, int start, int end, int k){ int i = start; int j = end; int x = nums[i]; while (ix && ik-1) //出错的地方………... 阅读全文