摘要：
count = len(len-1)/narr={1,2,3}len=3n=2组合的个数 count = len(len-1)/2 = 3(3-1)/2 =3----------------------得到的组合结果为1,21,32,3----------------------using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Testing{ class Program { static void Main(string[] args) { TestDoubl 阅读全文
