AlgoDaily - Reverse Only Alphabetical

Choosing a Method: The Art of Reversing

This problem bears a striking resemblance to the classic task of reversing a string or an array. There are numerous methods to achieve this, each with its own pros and cons. My personal favorite for handling a standard string reversal is the Two Pointers with Swap Method.

Imagine your string as a long line of dancers. The two-pointer approach essentially places a dancer at each end of the line. They swap places, and then the dancers take a step inward, again swapping places, until they meet in the middle. It's an elegant and efficient dance, if you will.

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function reverseArray(arr) {
  let start = 0;
  let end = arr.length - 1;
​
  while (start <= end) {
    const temp = arr[start]
    arr[start] = arr[end];
    arr[end] = temp;
​
    start++;
    end--;
  }
​
  return arr;
}

OUTPUT

Results will appear here.