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Project Euler
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**4**

Problem 4 asks:

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

I solved this with a simple brute force solution in Java:

public class Problem4 { public static void main(String[] args) { int product, rProduct, temp; int result = 0; for (int a = 100; a < 1000; a++) { // start from `a' to avoid duplicates for (int b = a; b < 1000; b++) { product = a * b; temp = product; rProduct = 0; while (temp > 0) { rProduct = rProduct * 10 + temp % 10; temp = temp / 10; } if (product == rProduct && product > result) { result = product; } } } System.out.println(result); } }

I would try to come up with a more efficient solution if the numbers were bigger, but as is it runs in under a tenth of a second.