import java.util.Scanner;public  class Main{    public static int[] Test(int[] a){        int [] b =new int [1001];        for (int i =0;i<1001;i++){            b[i] = 0;        }        int len = a.length;        for (int i =0;i

 

 

 

 

第二个方法：

import java.util.ArrayList;import java.util.Collections;import java.util.Iterator;import java.util.List;import java.util.Scanner;public class Main {    public static void main(String[] args) {                Scanner scanner = new Scanner(System.in);                do{            int n=0,m=0,i=0;            List
     
       list=new ArrayList
      
       ();            n=scanner.nextInt();            for(i=0;i
       
         iterator=list.iterator();            while(iterator.hasNext()){                System.out.println(iterator.next());            }        }while(!(scanner.hasNext("a")));    }}
       
      
     

 

此方法存在漏洞：