做Easy题真有种骗自己的感觉。。
public boolean canConstruct(String ransomNote, String magazine) {
int[] map = new int[26];
for (int i = 0; i < magazine.length(); i++) {
map[magazine.charAt(i) - 'a']++;
}
for (int i = 0; i < ransomNote.length(); i++) {
if (map[ransomNote.charAt(i) - 'a'] == 0) {
return false;
}
map[ransomNote.charAt(i) - 'a']--;
}
return true;
}
