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);
        while (sc.hasNextLine()) {
            String str1 = sc.nextLine();
            String str2 = sc.nextLine();
            Map<Character, Boolean> map = new HashMap<>();
            for (int i = 0; i < str2.length(); i++) {
                map.putIfAbsent(str2.charAt(i), true);
            }
            for (int j = 0; j < str1.length(); j++) {
                if (map.containsKey(str1.charAt(j))) {
                    continue;
                } else {
                    System.out.println("false");
                    return;
                }
            }
            System.out.println("true");
        }

    }
}