首頁(yè) 猿問(wèn) 請(qǐng)問(wèn)如何獲取一個(gè)時(shí)間段內(nèi)有多少個(gè)星期X

請(qǐng)問(wèn)如何獲取一個(gè)時(shí)間段內(nèi)有多少個(gè)星期X

.NET

婷婷同學(xué)_ 2018-08-02 05:06:09

/// <summary> /// 根據(jù)時(shí)間段獲取每星期X的總數(shù) /// </summary> /// <param name="beginDateTime">開(kāi)始時(shí)間</param> /// <param name="endDateTime">結(jié)束時(shí)間</param> /// <param name="week">星期幾 0:星期日</param> /// <returns></returns> public static int GetWeekCount(DateTime beginDateTime, DateTime endDateTime, List<DayOfWeek> weekList) { } 如何讓這個(gè)單元測(cè)試相等呀？ List<DayOfWeek> list = new List<DayOfWeek>(); list.Add(DayOfWeek.Tuesday); list.Add(DayOfWeek.Wednesday);//從2012-5-1日到2012-5-31 日有10天符合星期二或星期三 TestHelper.Test(DateTimeHelper.GetWeekCount(DateTime.Parse("2012-5-1"), DateTime.Parse("2012-5-31"), list) == 10);

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2 回答

德瑪西亞99

TA貢獻(xiàn)1770條經(jīng)驗(yàn) 獲得超3個(gè)贊

public static int GetWeekCount(DateTime begin, DateTime end, List<DayOfWeek> weekList)
{       return Enumerable.Range(0, (end - begin).Days)
           .Count(n => weekList.Contains(begin.AddDays(n).DayOfWeek));
}

反對(duì) 回復(fù) 2018-08-06

智慧大石

TA貢獻(xiàn)1946條經(jīng)驗(yàn) 獲得超3個(gè)贊

獲取一段時(shí)間內(nèi)有多少個(gè)周幾，你這樣寫(xiě)試試呢：

       public static int GetWeekCount(DateTime beginDateTime, DateTime endDateTime, List<DayOfWeek> weekList)
       {
           int num = 0;
           for (; beginDateTime < endDateTime; beginDateTime = beginDateTime.AddDays(1))
           {
             foreach ( DayOfWeek dow in weekList)
             {
                 if (beginDateTime.DayOfWeek == dow)
                     num++;
             }
           }
           return num;
       }