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@allprod
Forked from emmabostian/findProduct.js
Created June 24, 2019 06:00
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function findProduct(arr) {
// First find the total product of all indeces
let totalProduct = arr[0];
for (let i = 1; i < arr.length; i++) {
totalProduct *= arr[i];
}
// Then, return a new array where each index is the
// product of all numbers, except for the current value of that index
// i.e. newArr[0] = arr[1] * arr[2] * arr[3]... arr[length-1];
// i.e. newArr[1] = arr[0] * arr[2] * arr[3]... arr[length-1];
// We can do this by just dividing by the number at arr[i] to get the
// remaining product
return arr.map(num => totalProduct / num);
}
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