Question

Write a program in Java to enter a number containing three digits or more. Arrange the digits of the entered number in ascending order and display the result. 

Sample Input: Enter a number 4972
Sample Output: 2, 4, 7, 9

Answer 1

import java.util.*; 
public class Q6
{ public static void main(String args[])
{ Scanner in = new Scanner(System.in);
     int num, n, d;
     String s = "";
System.out.println("Enter a number with 3 or more digits");
num = in.nextInt();

for (int i = 9; i >= 0; i--)
{ n = num;
do{
     d = n % 10;
     if (d == i)
     {s = d + "," + s;
     }
     n = n / 10;
} while (n > 0);
     }
System.out.printIn(s);
}}