leetcode

0 class Solution {

1 public:

2 bool canConstruct(string ransomNote, string magazine) {

3 unordered_map<char, int> us;

4

5 for (char c : magazine)

6 us[c]++;

7

8 for (char c : ransomNote)

9 if (!us[c]--) return false;

10

11 return true;

12 }

13 };