亲爱的牛客们~ 又到了【每日一题】的时候啦,昨天的题目你思考的肿么样了呢? 大家不妨练习一下,欢迎来讨论区和大家一起讨论哟~ 今天的题目是这样滴: 【每日一题】0320 [编程题]combinations 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], [3,4], [2,3], [1,2...