[1768] Merge Strings Alternately

字串題

看起來可愛 XD

char * mergeAlternately(char * word1, char * word2){

int l1 = strlen(word1);

int l2 = strlen(word2);

char *ret = malloc (sizeof(char)*(l1+l2+1));

int i, idx;

idx=0;

for (i=0;i<l1 && i<l2;i++)

{

ret[idx++]=word1[i];

ret[idx++]=word2[i];

}

if (l1 <l2)

{

while (i<l2)

ret[idx++]=word2[i++];

}

else if (l2<l1)

{

while (i<l1)

ret[idx++]=word1[i++];

}

ret[idx]='\0';

return ret;

}