345. Reverse Vowels of a String
Description
Given a string s, reverse only all the vowels in the string and return it.
The vowels are 'a', 'e', 'i', 'o', and 'u', and they can appear in both lower and upper cases, more than once.
Example 1:
Input: s = "hello"
Output: "holle"Example 2:
Input: s = "leetcode"
Output: "leotcede"Constraints:
1 <= s.length <= 3 * 105sconsist of printable ASCII characters.
Solution from others
// using two pointers
/**
* @param {string} s
* @return {string}
*/
var reverseVowels = function (s) {
const vowels = 'aeiouAEIOU';
let left = 0;
let right = s.length - 1;
let arr = s.split('');
while (left < right) {
// find the vowels from the left
if (!vowels.includes(arr[left])) {
left++;
continue;
}
// find the vowels from the right
if (!vowels.includes(arr[right])) {
right--;
continue;
}
// swap the vowels using destructuring assignment
[arr[left], arr[right]] = [arr[right], arr[left]];
left++;
right--;
}
return arr.join('');
}