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  1. using System;
  2. using System.Diagnostics;
  3.  
  4. public class Test
  5. {
  6. 	static Random random = new Random();
  7.  
  8. 	public static Double Random() {
  9.             return random.NextDouble();
  10.         }
  11.  
  12.         public static Double Random2() {
  13.             return -1;
  14.         }
  15.  
  16. 	public static void Main()
  17. 	{
  18. 	    {
  19.                 Stopwatch s = new Stopwatch();
  20.                 Double a = 0;
  21.                 s.Start();
  22.                 for (Int32 i = 0; i < 5000000; i++)
  23.                     a += Random();
  24.                 s.Stop();
  25.                 Console.WriteLine(s.ElapsedMilliseconds);
  26.             }
  27.  
  28.             {
  29.                 Stopwatch s = new Stopwatch();
  30.                 Double a = 0;
  31.                 s.Start();
  32.                 for (Int32 i = 0; i < 5000000; i++)
  33.                     a += Random2();
  34.                 s.Stop();
  35.                 Console.WriteLine(s.ElapsedMilliseconds);
  36.             }
  37.  
  38.             {
  39.                 Stopwatch s = new Stopwatch();
  40.                 Double a = 0;
  41.                 s.Start();
  42.                 for (Int32 i = 0; i < 5000000; i++)
  43.                     a += random.NextDouble();
  44.                 s.Stop();
  45.                 Console.WriteLine(s.ElapsedMilliseconds);
  46.             }
  47. 	}
  48. }
Success #stdin #stdout 0.43s 37024KB
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https://ideone.com/ifJLE
language:
C# (gmcs 5.20.1)
created:
13 years ago
visibility:
public

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