[345] Reverse Vowels of a String

歡樂的題目？！

雖然不想寫太多easy，但是這題在LeetCode 75裡面啊

那就加減寫一寫好了 XD

bool isVowel(char input)

{

if ((input =='a') || (input =='e') || (input =='i') || (input =='o') || (input =='u') || (input =='A') || (input =='E') || (input =='I') || (input =='O') || (input =='U'))

return true;

else

return false;

}

char * reverseVowels(char * s){

int len = strlen(s);

int i=0,j=len-1;

while(i<j)

{

while(i<j && !isVowel(s[i]))

i++;

while(i<j && !isVowel(s[j]))

j--;

char tmp=s[i];

s[i]=s[j];

s[j]=tmp;

i++;

j--;

}

return s;

}