java OJ题，写了一个下午没结果，已经裂开，求解答

Question

import java.util.Scanner;
class queue {
int len;
int outnumber;
int innumber;
int staynumber=len-outnumber;
int Queue[]=new int[len];
int Innumber[]=new int[innumber];
int Outnumber[]=new int[outnumber];
public void queuelength() {
Scanner sc=new Scanner(System.in);
int len=sc.nextInt();
}
public void inqueue(){
for(int i=0;i<len;i++){
Scanner sc=new Scanner(System.in);
Queue[i]=sc.nextInt();
}
}
public void setOutnumber(){
System.out.print("out ");
Scanner sc=new Scanner(System.in);
outnumber=sc.nextInt();
}
public void setInnumber(){
System.out.print("in ");
Scanner sc=new Scanner(System.in);
for(int i=0;i<innumber;i++){
Innumber[i]= sc.nextInt();
}
}
public void changequeue(){
if(innumber>outnumber){len+=innumber=outnumber;}
for(int i=0;i<outnumber;i++)
Queue[i]=Queue[i+outnumber];
for(int i=staynumber;i<len;i++){
Queue[i]=Innumber[i-staynumber];
}
for(int i=0;i<outnumber;i++){
Outnumber[i]=Queue[i];
}
}
public void printqueue(){
System.out.print("len= "+len+",data= ");
for(int i=0;i<len;i++){
System.out.print(Queue[i]+" ");
}
System.out.print("\n");
System.out.print("len= "+outnumber+",data= ");
for(int i=0;i<=outnumber;i++){
System.out.print(Outnumber[i]+" ");
}
}
}
public class queuetest {
public static void main(String[] args) {
queue queue1 = new queue();
queue1.queuelength();
queue1.inqueue();
queue1.setOutnumber();
queue1.setInnumber();
queue1.changequeue();;
queue1.printqueue();;
}
}

Answer 1

import java.util.ArrayList;
import java.util.Scanner;
class Queue {
    public ArrayList<Integer> list=new ArrayList<>();
    public ArrayList<Integer> outList=new ArrayList<>();
    public void inQueue(int i){
        this.list.add(i);
    }
    public ArrayList outQueue(int len){
        int outLen=this.list.size()<len?this.list.size():len;
        for(int j=0;j<outLen;j++){
            outList.add(list.get(j));
        }
        for(int j=outLen-1;j>=0;j--){
            list.remove(j);
        }
        return outList;
    }
}
public class Main {
    public static void main(String[] args) {
        Queue q=new Queue();
        Scanner scan = new Scanner(System.in);
        String line = scan.nextLine();
        int len = Integer.parseInt(line);
        String[] s = scan.nextLine().split(" ");
        for (String str:s) {
            q.inQueue(Integer.parseInt(str));
        }
        String line1 = scan.nextLine();
        String line2 = scan.nextLine();
        int outNum = 0;
        ArrayList out=new ArrayList();
        if(line1.startsWith("in")){
            String[] ss = line1.split(" ");
            for(int i=1;i<ss.length;i++){
                q.inQueue(Integer.parseInt(ss[i]));
            }
        }else if(line1.startsWith("out")){
            outNum= Integer.parseInt(line1.split(" ")[1]);
            out=q.outQueue(outNum);
        }
        if(line2.startsWith("in")){
            String[] ss = line2.split(" ");
            for(int i=1;i<ss.length;i++){
                q.inQueue(Integer.parseInt(ss[i]));
            }
        }else if(line2.startsWith("out")){
            outNum= Integer.parseInt(line2.split(" ")[1]);
            out=q.outQueue(outNum);
        }
        System.out.print("len = "+ q.list.size());
        if(q.list.size()>0){
            System.out.print(", data =");
            for(int i : q.list){
                System.out.print(" "+i);
            }
        }
        System.out.println();
        System.out.print("len = "+ out.size());
        if (out.size()>0){
            System.out.print(", data =");
            for(int i=0;i<out.size();i++){
                System.out.print(" "+out.get(i));
            }
        }
        scan.close();
    }
}