[leetcode]77. Combinations组合

Given two integers  n and  k, return all possible combinations of  k numbers out of 1 ...  n.

Example:

Input: n = 4, k = 2 Output: [ [2,4], [3,4], [2,3], [1,2], [1,3], [1,4], ]

 

题目

 

转载于:https://www.cnblogs.com/liuliu5151/p/9828170.html