摘要: 题目: 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: [ [2,4], 阅读全文
posted @ 2017-05-30 00:10 panini 阅读(159) 评论(0) 推荐(0) 编辑