LeetCode Records - Question 3227 Vowels Game in a String Attempt 1: Use toCharArray() to count the number of vowels class Solution { public boolean doesAliceWin(String s) { int count = 0; for (char ch : s.toCharArray()) { if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u') { count++; } } return count != 0; } } Runtime: 7 ms (Beats: 59.97%) Memory: 45.23 MB (Beats: 81.29%) Attempt 2: Use charAt() to count the number of vowels class Solution { public boolean doesAliceWin(String s) { int count = 0; int size = s.length(); for (int i = 0; i < size; i++) { char ch = s.charAt(i); if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u') { count++; } } return count != 0; } } Runtime: 6 ms (Beats: 66.85%) Memory: 45.34 MB (Beats: 66.85%)