package ProjectEuler;
/**
* The sum of the squares of the first ten natural numbers is, 1^2 + 2^2 + ... + 10^2 = 385 The
* square of the sum of the first ten natural numbers is, (1 + 2 + ... + 10)^2 = 552 = 3025 Hence
* the difference between the sum of the squares of the first ten natural numbers and the square of
* the sum is 3025 − 385 = 2640. Find the difference between the sum of the squares of the first N
* natural numbers and the square of the sum.
*
*
link: https://projecteuler.net/problem=6
*/
public class Problem06 {
public static void main(String[] args) {
int[][] testNumbers = {
{10, 2640},
{15, 13160},
{20, 41230},
{50, 1582700}
};
for (int[] testNumber : testNumbers) {
assert solution1(testNumber[0]) == testNumber[1]
&& solutions2(testNumber[0]) == testNumber[1];
}
}
private static int solution1(int n) {
int sum1 = 0;
int sum2 = 0;
for (int i = 1; i