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, $$(1 + 2 + ... + 10)^2 = 55^2 = 3025$$ 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 one hundred natural numbers and the square of the sum.
function sumSquareDifference(n: number): number {
let sumOfSquares = 0;
let squareOfSums = 0;
for (let i = 1; i <= n; i++) {
sumOfSquares += Math.pow(i, 2);
squareOfSums += i;
}
squareOfSums = Math.pow(squareOfSums, 2);
return squareOfSums - sumOfSquares;
}
Thoughts:
Another fun little mathematical problem being solved by crawling up the list of numbers, I wonder if there's a way to do this in a more efficient way.