How to sort Integer digits in ascending order without Strings or Arrays?

Question

I\'m trying to sort the digits of an integer of any length in ascending order without using Strings, arrays or recursion.

Example:

Input: 451467
Outp         


        

Answer 1

It's 4 lines, based on a for loop variant of your while loop with a little java 8 spice:

int number = 4214;

List numbers = new LinkedList<>(); // a LinkedList is not backed by an array
for (int i = number; i > 0; i /= 10)
    numbers.add(i % 10);
numbers.stream().sorted().forEach(System.out::println); // or for you forEach(IO::println)