LeetCode 345

Reverse Vowels of a 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".

/*************************************************************************
    > File Name: LeetCode345.c
    > Author: Juntaran
    > Mail: JuntaranMail@gmail.com
    > Created Time: Tue 10 May 2016 08:55:33 PM CST
 ************************************************************************/
 
/*************************************************************************
    
    Reverse Vowels of a 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".

 ************************************************************************/

#include <stdio.h>

int isVowels( char s )
{
    int flag = 0;
    if( s=='a' || s=='e' || s=='i' || s=='o' || s=='u' || s=='A' || s=='E' || s=='I' || s=='O' || s=='U' )
    {
        flag = 1;
    }
    return flag;
}

char* reverseVowels( char* s )
{
    int left  = 0;
    int right = strlen(s) - 1;
    
    printf("%c %c
", s[left], s[right]);
    char temp;
    
    
    while( left < right )
    {
        printf("%d %d
", left, right);
        if( isVowels(s[left]) == 1 )
        {
            if( isVowels(s[right]) == 1 )
            {
                temp = s[left];
                s[left] = s[right];
                s[right] = temp;
                
                left ++;
                right--;
                printf("%s
", s);
            }
            else
            {
                right--;
            }
        }
        else
        {
            left ++;
        }
    }
    return s;
}

int main()
{
    char* s = "leetcode";
    printf("%s
", s);
    char* reverseS = reverseVowels(s);
    printf("%s
", s);
    
    
    return 0;
}