题解 | 字符串分隔

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
       Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        int count  = 0;
        StringBuilder sb  = new StringBuilder(s);
        if(s.length() %8!=0){
            for(int i = 0;i<8-s.length()%8;i++){
                sb.append(0);
            }
        }
        String result = sb.toString();
        for(char c :result.toCharArray()){
            count++;
            System.out.print(c);
            if(count == 8){
                System.out.println();
                count = 0;
            }
        }
        sc.close();
    }
}

用一个动态字符串来添加0至字符串长度是8的倍数，然后将字符一个个输出，每8个字符后边加一个空格