题解 | #字符串字符匹配#

import java.util.*;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String line1 = sc.nextLine();
        String line2 = sc.nextLine();

        char[] chars1 = line1.toCharArray();
        HashSet<Character> set1 = new HashSet<>();
        for (char c : chars1) {
            set1.add(c);
        }
        char[] chars2 = line2.toCharArray();
        HashSet<Character> set2 = new HashSet<>();
        for (char c : chars2) {
            set2.add(c);
        }
        if (set2.containsAll(set1)) {
            System.out.println(true);
        } else {
            System.out.println(false);
        }
    }
}