题解 | #字符串分隔#

import java.util.List;
import java.util.ArrayList;
import java.util.Scanner;

// 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 in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNext()) { // 注意 while 处理多个 case
            String s = in.next();
            if (s == null || "".equals(s)) {
                continue;
            }

            if (s.length() < 8) {
                while (s.length() < 8) {
                    s += "0";
                }
                System.out.println(s);
                continue;
            }

            if (s.length() == 8) {
                System.out.println(s);
                continue;
            }

            if (s.length() > 8) {
                List<String> list = new ArrayList<>();
                int start = 0;
                while (start < s.length() - 8) {
                    list.add(s.substring(start, start + 8));
                    start += 8;
                }
                list.add(s.substring(start));

                String last = list.get(list.size() - 1);
                if (last.length() < 8) {
                    while (last.length() < 8) {
                        last += "0";
                    }
                    list.set(list.size() - 1, last);
                }
                for (String s1 : list) {
                    System.out.println(s1);
                }
            }
        }
    }
}