题解 | #字符串分隔#

直接for循环

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String input = in.nextLine();

        StringBuilder builder = new StringBuilder();
        for (int i = 0; i < input.length(); i++) {
            builder.append(input.charAt(i));
            if ((i + 1) % 8 == 0) {
                System.out.println(builder.toString());
                builder = new StringBuilder();
            }
        }

        if (!builder.toString().equals("")) {
            int len = builder.length();
            for (int i = 8; i > len; i--) {
                builder.append("0");
            }
            System.out.println(builder.toString());
        }
    }
}