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  1. using System;
  2. using System.Collections;
  3. using System.Collections.Generic;
  4. using System.Diagnostics;
  5. using System.Linq;
  6.  
  7. public class Test
  8. {
  9. 	public static void Main()
  10. 	{
  11.         Debug.Assert(2 == Keisan(2, "one"));
  12.         Debug.Assert(6 == Keisan(2, "one", "two"));
  13.         Debug.Assert(12 == Keisan(2, "one", "two", "three"));
  14.         Debug.Assert(8 == Keisan(2, "one", "three"));
  15. 	}
  16.  
  17.     static int Keisan(int i, params string[] args) => i * Conv(args).Sum();
  18.  
  19.     static IEnumerable<int> Conv(params string[] args)
  20.     {
  21.         foreach (var item in args)
  22.         {
  23.             if (item == "one")
  24.             {
  25.                 yield return 1;
  26.             }
  27.             else if (item == "two")
  28.             {
  29.                 yield return 2;
  30.             }
  31.             else if (item == "three")
  32.             {
  33.                 yield return 3;
  34.             }
  35.         }
  36.     }
  37. }
Success #stdin #stdout 0.02s 12676KB
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https://ideone.com/b4A3Hl
language:
C# (gmcs 5.20.1)
created:
6 years ago
visibility:
public

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