Project Euler - Problem 52

euler.java

package euler;

import java.util.Arrays;

public class SameDigits {
	public static String sort(String s) {
		char[] array = s.toCharArray();
		Arrays.sort(array);
		return new String(array);
	}
	
	public static void main(String[] args) {
		
		for (int i = 1; i < 1_000_000_000; i++) {
			String n = String.valueOf(i);
			String n2 = String.valueOf(2*i);
			String n3 = String.valueOf(3*i);
			String n4 = String.valueOf(4*i);
			String n5 = String.valueOf(5*i);
			String n6 = String.valueOf(6*i);
			
			n = sort(n);
			n2 = sort(n2);
			n3 = sort(n3);
			n4 = sort(n4);
			n5 = sort(n5);
			n6 = sort(n6);
			
			if (n.equals(n2) && n2.equals(n3) && n3.equals(n4) && n4.equals(n5) && n5.equals(n6)) {
				System.out.println(i);
				break;
			}
		}
	}
}