LeetCode 345: Reverse Vowels of a String

LeetCode String

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”.

代码

C语言版本：

int isVowelsChar(char p) {
    return (p == 'a' || p == 'e' || p == 'i' || p == 'o' || p == 'u' || p=='A' || p=='E' || p == 'I' || p == 'O' || p =='U');
}
char* reverseVowels(char* s) {
    int left = 0;
    int right = strlen(s) - 1;
    if (strlen(s) < 1) {
        return s;
    }
    while (left < right) {
        while (!isVowelsChar(s[left]) && left < right) {
            left++;
        }
        while (!isVowelsChar(s[right]) && left < right) {
            right--;
        }
        char temp = s[left];
		s[left] = s[right];
		s[right] = temp;
        left++;
		right--;
    }
    return s;
}

481 / 481 test cases passed.
Status: Accepted
Runtime: 4 ms