reverseVowelsInPlaceRefactored

/*$
reverseVowels(word) - 
Given an array of characters, 
reverse the vowels but keep the consonants in place.

Space complexity: O(1)
Time complexity: O(N)

Example: ["w","h","i","t","e","b","o","a","r","d"] ->
         ["w","h","a","t","o","b","e","i","r","d"]

*/

const letters = ["w","h","i","t","e","b","o","a","r","d"];

function reverseVowels(word) {
  let vowels = /[aeiou]/
  let start = 0;
  let end = word.length - 1;
  let temp;
  

  while (start !== end) {
        console.log(start + " " + end)
   
    if (!word[start].match(vowels)) {
      start += 1;
      continue;
    }
    
    if (!word[end].match(vowels)) {
      end -= 1;
      continue;
    }
    
 

    temp = word[start];
    word[start] = word[end];
    word[end] = temp;

    start += 1;
    end -= 1;
  }
  
  console.log(start + " " + end)
  
  return word;
} 

console.log(reverseVowels(letters));