java 383. Ransom Note.java

Posted 2021-05-08

public class Solution {
    public boolean canConstruct(String ransomNote, String magazine) {
        if (ransomNote == null || magazine == null || magazine.length() < ransomNote.length()) return false;
        int[] vector = new int[26];
        for (char c : magazine.toCharArray()) {
            vector[c - 'a']++;
        }
        for (char c : ransomNote.toCharArray()) {
            if (--vector[c - 'a'] < 0) {
                return false;
            }
        }
        return true;
    }
}