摘要： //1. 递归求和 GetValue2(int i)//2. 总结规律求和 GetValue(int i)//3. 判断奇偶求和using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace SumDemo2{ class Program { static int GetValue2(int i) { int flag = 0; if (i == 1) retur... 阅读全文