【leetcode】赎金信
bool canConstruct(char * ransomNote, char * magazine){
int hash[26] = {0},i;
for (i=0; magazine[i] != '\0'; i++) {
hash[magazine[i]-97]++;
}
for (i=0; ransomNote[i] != '\0'; i++){
if (!hash[ransomNote[i]-97]--) return false;
}
return true;
}