题解 | #字符串分隔&填充#

import java.util.Scanner;

// 字符串右填充:String.format("%1$-" + 8 + "s", str).replaceAll(" ", "0");//总长度8，原字符串长度不足8空格自动补全
// 字符串左填充:String.format("%" + 8 + "s", str).replaceAll(" ", "0");//总长度8，原字符串长度不足8空格自动补全
//字符串分隔，substring函数参数含义：str.subString(start,endPosition)

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str = sc.next();
        int len = str.length();
        int yushu = len % 8 ;
        int count = yushu > 0 ? (len / 8 + 1) : len / 8;
        String[] arr = new String[count];
        if (len < 8) {
            arr[0] = String.format("%1$-" + 8 + "s", str).replaceAll(" ", "0");
            System.out.println( arr[0]);
            return;
        }

        for (int i = 0; i < count; i++) {

            if (yushu > 0 && i == count - 1) {
                arr[i] = String.format("%1$-" + 8 + "s", str.substring(8 * i,
                                       len)).replaceAll(" ", "0");
                break;
            }
            arr[i] = str.substring(8 * i, 8 * i + 8);
        }
        for (int i = 0; i < count; i++) {
            System.out.println( arr[i]);
        }

    }
}