Sum square difference

The sum of the squares of the first ten natural numbers is,


The square of the sum of the first ten natural numbers is,


Hence the difference between the sum of the squares of the first ten natural numbers and the square of the sum is

.

Find the difference between the sum of the squares of the first one hundred natural numbers and the square of the sum.

const sumOfSquares = (from = 1, to = 1) => {
    let sum = 0;
    for (let index = from; index <= to; index++) {
        const number = index
        sum += number ** 2;
    }

    return sum;
}

const squareOfSum = (from = 1, to = 1) => {
    let sum = 0;

    for (let index = from; index <= to; index++) {
        sum += index;
    }

    return sum ** 2;
}

console.log(squareOfSum(1, 100) - sumOfSquares(1, 100));