在C#中获取最后的'N'个季度 [英] Get last 'N' quarters in C#

问题描述

假设当前季度为3，年份为2011.如何获得最近5个季度

Suppose the current quater is 3 and the year is 2011. How can I get the last 5 quarters

所需的输出:

Q3-2011
Q2-2011
Q1-2011
Q4-2010
Q3-2010

Q和'-'被附加.

我正在尝试下

int generateQuater = 5;

            int currentQuater = 3;//GetQuarter(DateTime.Now.Month);
            int currentYear = DateTime.Now.Year;

            List<string> lstQuaterYear = new List<string>();

            lstQuaterYear.Add(string.Concat('Q',currentQuater, '-', currentYear));

            for (int i = generateQuater; i > 0; i++)
            {
              //code to be placed   
            }

谢谢

推荐答案

您必须减少您的循环变量.其余的数学并不是太困难.也不必以任何特殊方式处理第一次迭代:

You have to decrease your loop variable. The rest is not too difficult math. Its also not necessary to handle the first iteration in any special way:

for (int i = generateQuater; i > 0; i--)
{
    lstQuaterYear.Add(string.Format("Q{0}-{1}", currentQuater, currentYear));
    if (--currentQuater == 0)
    {
        currentQuater = 4;
        currentYear--;
    }
}

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