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  1. using System;
  2.  
  3. 	public static class Extensions
  4.     {
  5.         public static int HighestOneBit(this int number)
  6.         {
  7.             return (int)Math.Pow(2, Convert.ToString(number, 2).Length - 1);
  8.         }
  9.     }
  10.  
  11.  
  12. public class Test
  13. {
  14.     public static uint highestOneBit(uint i) 
  15.     {
  16.         i |= (i >>  1);
  17.         i |= (i >>  2);
  18.         i |= (i >>  4);
  19.         i |= (i >>  8);
  20.         return i - (i >> 1);
  21.     }
  22.  
  23. 	public static void Main()
  24. 	{
  25. 		Console.WriteLine();
  26. 		Console.WriteLine((-1).ToString("X"));
  27. 		Console.WriteLine((Int32.MinValue).HighestOneBit().ToString("X"));
  28. 	}
  29. }
Success #stdin #stdout 0.04s 24208KB
comments (?)
stdin 
Standard input is empty
stdout 
FFFFFFFF
80000000
https://ideone.com/oEiNcM
language:
C# (gmcs 5.20.1)
created:
9 years ago
visibility:
public

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