摘要: Given two integers n and k, return all possible combinations of k numbers out of 1 ... n. For example, If n = 4 and k = 2, a solution is: L15-L16 判段一下 阅读全文
posted @ 2016-12-09 04:16 lettuan 阅读(170) 评论(0) 推荐(0) 编辑