I've perused over some of the other solutions here, tried to come up with something original, but I'm having a difficult time understanding why it won't stop letting me input in Eclipse, and how to deal with that...Here's my code:

import java.util.*;

public class ReverseRoot
{//start class
    public static void main(String[] args)
    {//start main
        Scanner in = new Scanner(System.in);
        ArrayList<Long> array = new ArrayList<Long>();
        array.add(in.nextLong());

        while(in.hasNextLong())
        {
            array.add(in.nextLong());
        }
        in.close();

        for (int i = array.size(); i > 0; i--)
            System.out.printf("%.4f%n", Math.sqrt((double)array.get(i)));
    }//end main
}//end class

Try to run program from command line:
java Solution < 1.txt
And 1.txt contains list of numbers, like below:
1
2
3

Edited by author 30.10.2016 22:25