【华为上机】 实现一个简易的银行排号叫号系统（代码欠妥，求修改）

get
get
get
get vip
count
countN 1
call
quit

1
2
3
vip 4
4
1
vip 4

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;
import java.util.Stack;

public class Main12 {

enum Cmd {get,call,delete,count,countN,reset,quit};
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner cin = new Scanner(System.in);
String line;
int count=1;
List<Integer> nums = new ArrayList<Integer>();
List<Integer> vipnums = new ArrayList<Integer>();
int cnum=0;
while (cin.hasNext()){
line = cin.nextLine();
String[] strs = line.split(" ");
String mycmd = strs[0];

switch (mycmd) {
case "get":
cnum=0;
if(count>100000){
System.out.println("error");
}else{
int c1=0,c2=0;
if(nums.size()>0)
c1 = Collections.max(nums);
if(vipnums.size()>0)
c2 = Collections.max(vipnums);
count = c1>c2?c1+1:c2+1;

if(strs.length==1){
System.out.println(count);
nums.add(count);
}else if(strs[1].equals("vip")){
System.out.println("vip "+count);
vipnums.add(count);
}
else
System.out.println("error");
}
break;
case "call":
cnum++;
if(cnum==6)
System.out.println("error");

int num;
if(vipnums.size()>0){
Collections.sort(vipnums);
num = vipnums.get(0);
System.out.println("vip "+num);
vipnums.remove(0);
}else if(nums.size()>0){
Collections.sort(nums);
num = nums.get(0);
System.out.println(num);
nums.remove(0);
}else
System.out.println("error");
break;
case "delete":
cnum=0;
int delnum;
if(strs.length!=2){
System.out.println("error");
}else{
try{
delnum = Integer.parseInt(strs[1]);
}catch (Exception e) {
System.out.println("error");
break;
}
if(nums.contains(delnum)){
System.out.println(delnum);
nums.remove(nums.indexOf(delnum));
}else if(vipnums.contains(delnum)){
System.out.println("vip "+delnum);
vipnums.remove(vipnums.indexOf(delnum));
}else{
System.out.println("error");
break;
}
}
break;
case "count":
cnum=0;
System.out.println(nums.size()+vipnums.size());
break;
case "countN":
cnum=0;
if(strs.length!=2){
System.out.println("error");
break;
}
int curnum;
try{
curnum = Integer.parseInt(strs[1]);
}catch (Exception e) {
System.out.println("error");
break;
}
if(nums.contains(curnum)){
Collections.sort(nums);
System.out.println(nums.indexOf(curnum)+vipnums.size());
}else if(vipnums.contains(curnum)){
Collections.sort(vipnums);
System.out.println(vipnums.indexOf(curnum));
}else{
System.out.println("error");
}
break;
case "reset":
cnum=0;
nums.clear();
vipnums.clear();
count=1;
break;
case "quit":
return;
default:
System.out.println("error");
break;
}

}
}

}