#1: I need to go over an array and get a single value as a result

for_reduce.js

// for loop 
const sum = (array) => {
    let result = 0;
    for (let i = 0; i < array.length; i++) {
        result += array[i];
    }
    return result;
}

const numbers = [5, 25, 8, 18];
console.log(sum(numbers)); // logs 56

// reduce
const sum = (array) => array.reduce(
    (total, current) => total + current,
    0);

const numbers = [5, 25, 8, 18];
console.log(sum(numbers)); // logs 56