siblings.java

	  int largestSibLimit = 100000000;    
    public static int getLargestSiblingData(int x) {
        char tmpChar;
        char[] arrayChar = x.ToString().Where(Char.IsDigit).ToArray();
        char[] arrangdNumberChar = new char[arrayChar.Length];
        string arrangedStringNumbers = string.Empty;
        for (int i = 0; (i 
                    <= (arrayChar.Length - 1)); i++) {
            for (int j = 0; (j 
                        <= (arrayChar.Length - 1)); j++) {
                int next = (arrayChar.Length - 1);
                
                (j 
                            == (arrayChar.Length - 1));
                (j + 1);
                if ((arrayChar[j] < arrayChar[next])) {
                    tmpChar = arrayChar[next];
                    arrayChar[next] = arrayChar[j];
                    arrayChar[j] = tmpChar;
                }
                
            }
            
        }
        
        arrangedStringNumbers = string.Join("", arrayChar);
        if ((int.Parse(arrangedStringNumbers) > largestSibLimit)) {
            return -1;
        }
        
        return int.Parse(arrangedStringNumbers);
    }
    
	//Main class
    public static void Main(string[] args) {
        Console.WriteLine("Entre the Number");
        string number = Console.ReadLine();
        Console.WriteLine("The biggest number - ");
        if ((number != null)) {
            int largestSiblingNumber = getLargestSiblingData(int.Parse(number));
            Console.Write(largestSiblingNumber);
            Console.ReadKey();
        }
        
    }