题解 | #字符串分隔#

分情况讨论，主要利用StringBuffer和substring方法，空间占用较大。

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String str;
        while(sc.hasNext()){
            str = sc.nextLine();
            strTo8(str);
        }
    }
    public static void strTo8(String str){
        int len = str.length();
        StringBuffer sb;
        if(len == 8){
            System.out.println(str);
        }
        else if(len == 0){
            return;
        }
        else if(len < 8){
            sb = new StringBuffer(str);
            while (sb.length()!=8){
                sb.append('0');
            }
            System.out.println(sb.toString());
        }
        else if(len >8){
            String str2;
            int a = len % 8; 
            for(int i=0;i<len-a;i+=8){
                str2 = str.substring(i,i+8);
                System.out.println(str2);
            }
            if(a>0){
                str2 = str.substring(len-a,len);
                sb = new StringBuffer(str2);
                while (sb.length()!=8){
                    sb.append('0');
                }
                System.out.println(sb.toString());
            }
        }
    }
}