How to make reverse array work with for loop only

Asked Oct 16 '22 at 07:23

Active Oct 16 '22 at 07:26

Viewed 35 times

I can reverse loop using for loop and pop/shift BUT I want to reverse an array with the help of for loop only. So I tried,

let array = [1,2,3,4,5,6,7];
function reverseArray(array){
    for(let i=0; i<array.length; i++){
        let temp = array[i];
        array[(array.length-1)-i] = array[i];
        array[i] = temp;
        //[ array[i], array[(array.length-1)-i] ] = [ array[(array.length-1)-i], array[i] ]
    }
    console.log(array)
}

reverseArray(array);

You can also see the destructuring method used in the comment, it also dont work. I want to use in place array only, dont want to create another array for storage. But I am not getting reversed string, can you please point out my mistake?

edited Oct 16 '22 at 07:26

asked Oct 16 '22 at 07:23

Mohit M

Initialize a new array. Have your for loop start at the end of your array. Append this value. Decrement with i-- – Bijan Oct 16 '22 at 07:28
Please see [What is the most efficient way to reverse an array in Javascript?](/q/5276953/4642212). – Sebastian Simon Oct 16 '22 at 07:34
1

the key question to ask yourself: let array length be 10, how many swaps do I need? – gog Oct 16 '22 at 07:38
@gog thanks, I will try that approach first before looking other answers – Mohit M Oct 16 '22 at 07:45

How to make reverse array work with for loop only

0 Answers0