RotateMe

CSharp · Console

/Program.cs

using System;
using System.Globalization;
using System.Numerics;

public static class MyExtensions {
    public static T RotateDigitsLeft<T>(this T value, int count) where T : IBinaryInteger<T> {
      if (value == T.Zero)
        return T.Zero;

      string text = value.ToString().TrimStart('-');

      count = (count % text.Length + text.Length) % text.Length;

      char[] digits = new char[text.Length];

      for (int i = 0; i < digits.Length; ++i)
        digits[i] = text[(i + count) % digits.Length];

      string result = new string(digits).TrimStart('0');

      if (value < T.Zero)
        result = "-" + result;

      return T.Parse(result, CultureInfo.InvariantCulture);
    }

    public static T RotateDigitsRight<T>(this T value, int count) where T : IBinaryInteger<T> {
      if (value == T.Zero)
        return T.Zero;

      string text = value.ToString().TrimStart('-');

      count = text.Length - (count % text.Length + text.Length) % text.Length;

      char[] digits = new char[text.Length];

      for (int i = 0; i < digits.Length; ++i)
        digits[i] = text[(i + count) % digits.Length];

      string result = new string(digits);

      if (value < T.Zero)
        result = "-" + result;

      return T.Parse(result, CultureInfo.InvariantCulture);
    }
	
}
					
public class Program {
  public static void Main()	{
	int value = -12345;
	int resultLeft = value.RotateDigitsLeft(1);
	int resultRight = value.RotateDigitsRight(1);  
	  
	Console.WriteLine($"{value} : {resultLeft} : {resultRight}");
  }
}