I feel like i am missing some basic understanding here on what the nested loop is doing below. Any help would be appreciated.
The code below will pass the challenge however i don’t understand how its achieving this. I thought arr[i][j] is providing the position of the array but that does not seem right if as it would be product = product * arr[i][J] and (product is 1).
function multiplyAll(arr) {
var product = 1;
// Only change code below this line
for(var i=0; i < arr.length; i++){
for (var j=0; j < arr[i].length; j++){
product *= arr[i][j]
}
}
// Only change code above this line
return product;
}
multiplyAll([[1,2],[3,4],[5,6,7]]);
product starts at 1, but each time this line is hit
the value of product is updated.
function multiplyAll(arr) {
var product = 1;
// Only change code below this line
for (var i=0; i < arr.length; i++) { // Loop over all subarrays
for (var j=0; j < arr[i].length; j++) { // Loop over all elements of subarrays
product *= arr[i][j]; // Update value of product
}
}
// Only change code above this line
return product;
}
multiplyAll([[1,2],[3,4],[5,6,7]]);