C#逻辑面试题汇总【不断更新中】

(1)产生本月的月历，参考样式：

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SU MO TU WE TH FR SA          01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

将结果存入一个字符串里面

框架程序：

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using System; using System.Collections.Generic; using System.Linq; using System.Text;   namespace ConsoleApplication1 {     class Program     {         static void Main(string[] args)         {             string calendar = "";             // 在这里编写代码             Console.WriteLine(calendar);         }     } }

 时间限制 1 小时。

 

 

 

 

 

 

 

 

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答案区：

（1）

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string calendar = ""; // 在这里编写代码 DateTime now = DateTime.Today; DateTime dt1 = new DateTime(now.Year, now.Month, 1); DateTime dt2 = dt1.AddMonths(1).AddDays(-1); StringBuilder sb = new StringBuilder(); for (int i = (int)DayOfWeek.Sunday; i <= (int)DayOfWeek.Saturday; i++) {     sb.Append(((DayOfWeek)i).ToString().Substring(0, 2).ToUpper() + " "); } for (DateTime dt = dt1.AddDays(-(int)now.DayOfWeek); dt <= dt2; dt = dt.AddDays(1)) {     if (dt.Month < now.Month)         sb.Append("   ");     else         sb.Append(dt.Day.ToString().PadLeft(2, '0') + " ");     if (dt.DayOfWeek == DayOfWeek.Saturday)         sb.AppendLine(); } calendar = sb.ToString(); Console.WriteLine(calendar);