P4sec.java

class P4sec
    {
        public static void main(String[] args)
        {
            //Stopwatch timer = new Stopwatch();
            //timer.Start();
 
            int num1 = 0;
            int num2 = 0;
            int answer = 0;
 
            for (num1 = 100; num1 < 1000; num1++)
            {
                for (num2 = 100; num2 < 1000; num2++)
                {
                    int x = num1 * num2;
 
                    if (isPalindrome(x))
                    {
                        if (x > answer)
                        {
                            answer = x;
                        }
                    }
                }
            }
 
            //timer.Stop();
            System.out.println("Answer: {0} which is made from {1}, and {2}\n\nIt took {3} seconds to find the answer."+answer+"     .."+num1+".." +num2);//timer.Elapsed.ToString("ss\\.ff")); //Why are num1 and num2 showing up incorrectly?
            //Console.ReadLine();
        }
 
        private static boolean isPalindrome(int x)
        {
            int n = x;
            int rev = 0;
            int digit = 0;
            while (n > 0)
            {
                digit = n % 10;
                rev = rev * 10 + digit;
                n = n / 10;
 
                if (n == rev)
                {
                    return true;
                }
            }
            return false;
        }
    }