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: [ [2,4], [3,4], [2,3], [1,2], [1,3], [1,4],]这类组合问题的思路常见的一个办法就是递归。如果show(在结果里面show)那么该怎么处理,如果not show (不出现在结果里面)该怎么处理。void C(vector array, int start, int k, v...
阅读全文