Palindrome

Computer Science Level 2

A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 × 99.

Find the largest palindrome made from the product of two 3-digit numbers.

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The answer is 906609.

Rishabh Deep Singh by Rishabh Deep Singh , 23, India

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1 solution 

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public class Main {
    public static int pallindrome(int n) {
        int r, temp = n, sum = 0;
        while (n > 0) {
            r = n % 10;
            sum = sum * 10 + r;
            n = n / 10;
        }
        if (temp == sum) {
            return temp;
        } else {
            return 0;
        }
    }
    public static void main(String[] args) {
        int i, j, no, temp = 0;
        for (i = 100; i < 1000; i++) {
            for (j = 100; j < 1000; j++) {
                no = i * j;
                if (temp < pallindrome(no)) {
                    temp = pallindrome(no);
                }
            }
        }
        System.out.println(temp);
    }
}

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