public class SquareRootTable
{
    private static java.util.Scanner _sysin = new java.util.Scanner(System.in);

    private static int whole;
    private static int frac;
    private static double number;

    static double sqroot(double n)
    {
        double sqroot;

        double root;
        double prev;
        double diff;

        root = n;
        prev = root;
        do
        {
            root = (n/root + root)/2;
            diff = prev - root;
            prev = root;
        }
        while (!(diff < 0.0000001));
        sqroot = root;

        return sqroot;
    }

    public static void main(String[] args)
    {
        java.time.Instant _start = java.time.Instant.now();


        System.out.printf("Square Root Table\n");
        System.out.println();
        System.out.printf("     ");
        for (frac = 0; frac <= 9; frac++) 
        {
            System.out.printf("%10.1f", frac/10.0);
        }
        System.out.println();
        for (whole = 1; whole <= 25; whole++) 
        {
            System.out.printf("%5d", whole);
            for (frac = 0; frac <= 9; frac++) 
            {
                number = whole + frac/10.0;
                System.out.printf("%10.6f", sqroot(number));
            }
            System.out.println();
        }

        java.time.Instant _end = java.time.Instant.now();
        long _elapsed = java.time.Duration.between(_start, _end).toMillis();
        System.out.printf("\n[%,d milliseconds execution time.]\n", _elapsed);
    }
}