[2287] Rearrange Characters to Make Target String

是easy的題目，感覺有小小的陷阱  XD

但大致上是給人好心情的題目:P

#define MIN(A,B) ((A<B)?(A):(B))

int rearrangeCharacters(char * s, char * target){

int *hashS=calloc(26, sizeof(int));

int *hashT=calloc(26, sizeof(int));

for (int i=0; i< strlen(s);i++)

hashS[s[i]-'a']++;

for (int i=0; i< strlen(target);i++)

hashT[target[i]-'a']++;

int ret=100;

for (int i=0; i< strlen(target);i++)

if (hashT[target[i]-'a']>0 )

ret = MIN(ret,hashS[target[i]-'a'] / hashT[target[i]-'a']);

return ret;

}