leetcode 345. Reverse Vowels of a String
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leetcode 345. Reverse Vowels of a String
import java.util.HashSet;import java.util.Set;public class Solution { public static char[] cset = {'a','o','e','i','u','A','O','I','E','U'}; public String reverseVowels(String s) { Set<Character> vowelsets = new HashSet<Character>(); for(Character c:cset){ vowelsets.add(c); } char[] c = s.toCharArray(); int i = 0,j = c.length-1; while(i<j){ if(vowelsets.contains(c[i])&&vowelsets.contains(c[j])){ char tmp = c[i]; c[i] = c[j]; c[j] = tmp; i++; j--; }else if(vowelsets.contains(c[i])){ j--; }else if(vowelsets.contains(c[j])){ i++; }else{ i++; j--; } } return new String(c); }} 0 0
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