Numbers of the form 2^i 5^j

/**
 * 
 */
package org.code.dp;

import java.util.ArrayList;
import java.util.List;

/**
 * @author Purna
 * 
 */
public class Numbers2i5j {


    public static void main(String[] args) {
        List<Integer> result = new ArrayList<Integer>();
        result.add(Integer.valueOf(1));

        int x2Index = 0;
        int x5Index = 0;

        int curr = result.get(result.size() - 1);

        int x2 = curr * 2;
        int x5 = curr * 5;

        for (int i = 0; i < 5; i++) {

            int minimum = Math.min(x2, x5);
            result.add(Integer.valueOf(minimum));
            if (x2 == minimum) {
                x2Index++;
                x2 = 2 * result.get(x2Index);

            }
            if (x5 == minimum) {
                x5Index++;
                x5 = 5 * result.get(x5Index);
            }
        }
        System.out.println(result);
    }
}