JSFiddle - React, Tailwind, and code Playground

by Ty

JavaScript

/*
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 rocket () {
    var sum = 0;
    var happy = 0;
    for (var i = 1; i <= 100; i++){
        sum = sum + (i * i);
    }
    for (var i = 1; i <= 100; i++){
        happy = happy + i;
    }
    happy = happy * happy;
    return happy - sum;
}
console.log(rocket());