Write a function that takes a string as input and reverse only the vowels of a string.
Example 1: Given s = “hello”, return “holle”.
Example 2: Given s = “leetcode”, return “leotcede”.
Note: The vowels does not include the letter “y”.
class Solution {public: bool isVowels(char ch){ if(ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u' || ch == 'A' || ch == 'E' || ch == 'I' || ch == 'O' || ch == 'U') return true; return false; } string reverseVowels(string s) { for(int i = 0, j = s.length() - 1; i <= j;){ if(isVowels(s[i]) && isVowels(s[j])){ swap(s[i], s[j]); ++i; --j; } else if(isVowels(s[i])) --j; else if(isVowels(s[j])) ++i; else { ++i; --j; } } return s; }};新聞熱點
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