LeetCode in Kotlin
3856. Trim Trailing Vowels
Easy
You are given a string s that consists of lowercase English letters.
Return the string obtained by removing all trailing vowels from s.
The vowels consist of the characters 'a', 'e', 'i', 'o', and 'u'.
Example 1:
Input: s = “idea”
Output: “id”
Explanation:
Removing "id**ea**", we obtain the string "id".
Example 2:
Input: s = “day”
Output: “day”
Explanation:
There are no trailing vowels in the string "day".
Example 3:
Input: s = “aeiou”
Output: “”
Explanation:
Removing "**aeiou**", we obtain the string "".
Constraints:
1 <= s.length <= 100sconsists of only lowercase English letters.
Solution
class Solution {
fun trimTrailingVowels(s: String): String {
var i = s.length - 1
while (i >= 0 &&
(s[i] == 'a' || s[i] == 'e' || s[i] == 'i' || s[i] == 'o' || s[i] == 'u')
) {
i--
}
return s.substring(0, i + 1)
}
}