public static int FindMaxNumber(params int[] stringValue)
    {      
      Array.Sort(stringValue);
      return stringValue[stringValue.Length -1];
    }
   
    public static int FindMinNumber( params int[] stringValue)
    {      
      Array.Sort(stringValue);
      return stringValue[0];
    }

public static int FindMaxNumber(params int[] intArray)
    {
      int v = intArray[0];
      if (intArray.Length > 1)
      {
        for (int i = 2; i < intArray.Length; i++)
        {
          if (intArray[i] > v)
            v = intArray[i];
        }
      }
      return v;
    }

    public static int FindMinNumber(params int[] intArray)
    {
      int v = intArray[0];
      if (intArray.Length > 1)
      {
        for (int i = 2; i < intArray.Length; i++)
        {
          if (intArray[i] < v)
            v = intArray[i];
        }
      }
      return v;
    }    

public static int FindMaxNumber(params int[] intArray)
    {
      return intArray.Max();
    }

    public static int FindMinNumber(params int[] intArray)
    {
      return intArray.Min();
    }

static void Main(string[] args)
    {
      int[] value = { 15, 23, 41, 97, 100, 27, 67, 51 };

      Console.WriteLine("Class3:");
      Console.WriteLine("Max: {0}",Class3.FindMaxNumber(value));     
      Console.WriteLine("Min: {0}",Class3.FindMinNumber(value));

      Console.WriteLine("Class4:");
      Console.WriteLine("Max: {0}", Class4.FindMaxNumber(value));
      Console.WriteLine("Min: {0}", Class4.FindMinNumber(value));

      Console.WriteLine("Class5:");
      Console.WriteLine("Max: {0}", Class5.FindMaxNumber(value));
      Console.WriteLine("Min: {0}", Class5.FindMinNumber(value));
    }