Java（字符串分隔）

import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
        do{
            //读入数据
            String s = in.nextLine();
            int len = s.length();
            
            //计算子串数量
            int n;
            n = len%8 == 0 ? len/8 : len/8+1;
            String[] strings = new String[n];
            
            //对于前面的子串，正常截取
            StringBuilder builder;
            for(int i=0; i < n-1; i++){
                builder = new StringBuilder();
                for(int j=0; j < 8; j++){
                    builder.append(s.charAt(i*8+j));
                }
                strings[i] = builder.toString();
            }
            
            //对于最后一个子串，先填入字符串最后几个字母
            builder = new StringBuilder();
            for(int i=8*(n-1); i < len; i++){
                builder.append(s.charAt(i));
            }
            //若没填满8个，填充0
            if(len%8 != 0){
                for(int i=len%8; i < 8; i++)
                    builder.append('0');
            }
            strings[n-1] = builder.toString();
            
            //输出
            for(String t : strings)
                System.out.println(t);
        }while(in.hasNextLine());
    }
}