I am facing a dilemma with handling a large array that needs to be reversed and then joined using a string. While the conventional method reverses the array by iterating through each element in O(n) time, I am considering an alternative approach. Instead of reversing the whole array, simply flipping a boolean that tracks the order could be done in constant O(1) time. Subsequently, I can avoid using the join function and manually loop through the array in reverse order to achieve the desired outcome.
Thus, the code snippet:
arr.reverse().join(',')
can possibly be replaced with:
let tmp = '';
for(let i=arr.length-1; i>=0; i--)
tmp += arr[i] + ',';
followed by removing the last comma.
My concern is whether the Array.reverse() method is slow. Is it worth worrying about computational efficiency when dealing with just a few thousand items?
Note: Although there is a similar question on Stack Overflow regarding the Array.Reverse algorithm, this inquiry presents a new perspective. Please refrain from flagging as a duplicate unless the questions are identical.