题解 | #字符串分隔#

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 scanner = new Scanner(System.in);
        String s = scanner.nextLine();//接收一个字符串
        int length = s.length();//获取字符串的长度
        if (length % 8 != 0) { //%8!=0需要循环补零
            for (int i = 0; i < 8 - length % 8; i++) {
                s = s.concat("0");
            }
        }
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < s.length(); i++) {
            if (i >= 7 && !Character.isWhitespace(s.charAt(i)) &&
                    ((i / 8) + 1) * 8 - 1 == i) {
                sb.append(s.charAt(i) + "\n");
            } else {
                sb.append(s.charAt(i));
            }
        }
        System.out.println(sb);
    }
}