How can I reverse an array in JavaScript without using libraries?

Question

I am saving some data in order using arrays, and I want to add a function that the user can reverse the list. I can\'t think of any possible method, so if anybo

Answer 1

Below is a solution with best space and time complexity

function reverse(arr){
let i = 0;
let j = arr.length-1; 
while(i

output => [9,8,7,6,5,4,3,2,1]