Random伪随机数代码,CSharp代码库,德仔网

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【CSharp】 Random伪随机数
作者:Dezai.CN / 发布于2012/3/26/ 574
Random伪随机数
<div>using System;</div>
<div>using System.Collections.Generic;</div>
<div>using System.Linq;</div>
<div>using System.Text;</div>
<div>using System.Threading;</div>
<div></div>
<div>namespace 伪随机数</div>
<div>{</div>
<div>  class Program</div>
<div>  {</div>
<div>    static void Main(string[] args)</div>
<div>    {</div>
<div>      Random rnd=new Random ();</div>
<div>      char c;</div>
<div>      Random ro = new Random();</div>
<div>      Console.WriteLine("{0}", ro);</div>
<div></div>
<div></div>
<div>      int d = ro.Next();</div>
<div>      Console.WriteLine("{0}",d);</div>
<div></div>
<div>      Random rc = new Random();</div>
<div>      int f = rc.Next();</div>
<div>      Console.WriteLine("{0}",f);</div>
<div></div>
<div>      //Thread.Sleep(10000);</div>
<div>      //Console.WriteLine("time later 10000");</div>
<div></div>
<div></div>
<div>      Random s = new Random();</div>
<div>      double cc = s.NextDouble();</div>
<div>      Console.WriteLine("{0}",cc);</div>
<div></div>
<div></div>
<div>      int count = 4;</div>
<div>      Random[] rnds = new Random[count];</div>
<div>      int[] ss = new int[4];</div>
<div>      for (int i = 0; i < count; i++)</div>
<div>      {</div>
<div>        rnds[i] = new Random(unchecked((int)(DateTime.Now.Ticks >> i)));</div>
<div>        ss[i] = rnds[i].Next();</div>
<div>        Console.WriteLine("{0}",ss[i]);</div>
<div>      }
<div></div>
<div>      Random ww = new Random();</div>
<div>      double ee = ww.NextDouble();</div>
<div>      string gg = string.Format("{0:F5}", ee);</div>
<div>      Console.WriteLine("{0}",gg);</div>
<div></div>
<div>      int k = rc.Next(65, 91);</div>
<div>      c = (char)k;</div>
<div>      Console.WriteLine("{0}", c);</div>
<div></div>
<div>      string rr;</div>
<div>      rr = GetLetter(rnd);</div>
<div>      Console.WriteLine("{0}",rr);</div>
<div>      Console.ReadKey();</div>
<div>    </div>
<div>    }
<div>    public static string GetLetter(Random rnd)</div>
<div>    {</div>
<div>        // A-Z ASCII值 65-90</div>
<div>        // a-z ASCII值 97-122</div>
<div>       </div>
<div>        int i = rnd.Next(65, 123);</div>
<div>        char o = (char)i;</div>
<div>        if (char.IsLetter(o))</div>
<div>        {</div>
<div>          return o.ToString();</div>
<div>         }
<div>        else</div>
<div>        {</div>
<div>          // 递归调用，直到随机到字母</div>
<div>           return GetLetter(rnd);</div>
<div>         }
<div>      }
<div>  }
<div>}
<div></div>
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