题解 | #删除公共字符#

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();
            //char[] ch = str2.toCharArray();
            String[] str = str1.split(" ");
            StringBuilder sb = new StringBuilder();
            for (String i : str) {
                String str3 = i;
                for (int k = 0; k < str2.length(); k++) {
                    char ch = str2.charAt(k);
                    if (i.contains(ch + "")) {
                        str3 = str3.replaceAll(ch + "","");
                    }

                }
                sb.append(str3 + " ");
            }
            String str4 = sb.toString();
            str4 = str4.trim();
            System.out.println(str4);
        }
    }
}