9/29

package org.example;

import javafx.util.Pair;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.*;

public class Main {
    static  Set<String>set=new HashSet<>();//错题本去重
    static  Map<String ,Integer>ss=new HashMap<>();//错题的次数
    static  Map<String,Integer>mp=new HashMap<>();//存对应题目的答案
    static  List<String>st=new ArrayList<>();//存题目
    static int numyes=0,numno=0;//正确个数，错题个数
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        boolean flag1=true,flag2=true;//乘除，括号
        int k1,ma,mi;//题目个数，最大最小
        while(true){
            show1();int n=sc.nextInt();
            if(n==5)break;
            if(n==4)index();
            if(n==1){
                System.out.printf("题目是否有乘除法运算(y/n):");
                String c=sc.next();
                if(c.equals("y"))flag1=true;
                else flag1=false;
                System.out.printf("出题的个数:");
                k1=sc.nextInt();
                System.out.printf("操作数最大值:");
                ma=sc.nextInt();
                System.out.printf("操作数最小值:");
                mi=sc.nextInt();
                ma=100;
                second(flag1,k1,ma,mi);
            }else if(n==2){
                System.out.printf("题目是否有乘除法运算(y/n):");
                String c=sc.next();
                if(c.equals("y"))flag1=true;
                else flag1=false;
                System.out.printf("出题的个数:");
                k1=sc.nextInt();
                System.out.printf("操作数最大值:");
                ma=sc.nextInt();
                System.out.printf("操作数最小值:");
                mi=sc.nextInt();
                ma=1000;
                third(flag1,k1,ma,mi);
            }else if(n==3){
                System.out.printf("题目是否有乘除法运算(y/n):");
                String c=sc.next();
                if(c.equals("y"))flag1=true;
                else flag1=false;
                System.out.printf("题目是否有括号(y/n):");
                c=sc.next();
                if(c.equals("y"))flag2=true;
                else flag2=false;
                System.out.printf("出题的个数:");
                k1=sc.nextInt();
                System.out.printf("操作数最大值:");
                ma=sc.nextInt();
                System.out.printf("操作数最小值:");
                mi=sc.nextInt();
                forth(flag1,flag2,k1,ma,mi);
            }
        }
    }
    public static void show1(){
        System.out.println("------------------------------------------------------------");
        System.out.println("1、小学二年级题目");
        System.out.println("2、小学三年级题目");
        System.out.println("3、小学四年级题目");
        System.out.println("4、查看今日错题以及汇总");
        System.out.println("5、退出系统");
        System.out.println("------------------------------------------------------------");
    }
    public static void show2(){
        System.out.println("------------------------------------------------------------");
        System.out.println("1、进入下一场答题");
        System.out.println("2、查看今日错题");
        System.out.println("3、错题二次答题");
        System.out.println("------------------------------------------------------------");
    }
    public static int getrandom(int mi,int ma){
        Random r=new Random();
        int x=mi+r.nextInt(ma-mi+1);
        return x;
    }
    public static char getchar(String s){
        Random r=new Random();
        int idx=r.nextInt(4);
        return s.charAt(idx);
    }
    public static void second(boolean f1,int k1,int ma,int mi){
        System.out.println("设置倒计时时间:");
        Scanner sc=new Scanner(System.in);
        int t=sc.nextInt();
        String s;
        if(f1)s="+-*/";
        else s="+-+-";
        int cnt=1;
        int cntno=0;
        List<Pair<String,Integer>>li=new ArrayList<>();
        for(;cnt<=k1;){
            int[] a=new int[2];
            char c=getchar(s);
            for(int j=0;j<2;j++)
                a[j]=getrandom(mi,ma);
            int ans;
            if(c=='+')ans=a[0]+a[1];
            else if(c=='-')ans=a[0]-a[1];
            else if(c=='*')ans=a[0]*a[1];
            else{
                if(a[1]==0||(a[0]!=0&&a[0]%a[1]!=0))continue;
                else ans=a[0]/a[1];
            }
            String sk=""+a[0]+c+a[1];

            mp.put(sk,ans);
            Pair<String,Integer>p=new Pair<>(sk,ans);
            li.add(p);
            cnt++;
        }
        int id=1;
        long time=System.currentTimeMillis()/1000;
        for(Pair<String,Integer> p:li){
            long cur=System.currentTimeMillis()/1000;
            if(cur-time>t)break;
            else System.out.printf("还有%ds\n",t-(cur-time));
            System.out.println(""+id+":"+p.getKey()+"=");id++;
            String sk=p.getKey();
            int g=sc.nextInt(),ans=p.getValue();
            if(g==ans) {System.out.println("答案正确！");numyes++;cntno++;}
            else {System.out.printf("答案错误  ------  正确答案为:%d\n",ans);
                System.out.println();
                numno++;
                set.add(sk);
                if(ss.containsKey(sk))ss.put(sk,ss.get(sk)+1);
                else ss.put(sk,1);
            }
        }
        System.out.printf("错题数为:%d，正确率为:%d\n",k1-cntno,cntno*100/k1);
        try(PrintWriter wirter=new PrintWriter ("problems1.txt")){
            String an="";
            int cntc=0;
            for(Pair<String,Integer> p:li){
                cntc++;
                an+=p.getKey();
                an+="=";
                an+=p.getValue();
                an+="     ";
                wirter.print(an);
                if(cntc%3==0)wirter.println();
                an="";
            }
        }
        catch (FileNotFoundException e){
            e.printStackTrace();
        }
        show2();
        int n=sc.nextInt();
        if(n==1){
            return;
        }else if(n==2){
            index();
        }else{
            secondtest();
        }
    }
    public static void third(boolean f1,int k1,int ma,int mi){
        String s;
        if(f1)s="+-*/";
        else s="+-+-";
        Map<Character,Integer>ap=new HashMap<>();
        ap.put('+',1);ap.put('-',1);ap.put('/',2);ap.put('*',2);
        System.out.println("设置倒计时时间:");
        Scanner sc=new Scanner(System.in);
        int t=sc.nextInt();
        int cnt=1,cntyes=0;
        List<Pair<String,Integer>>li=new ArrayList<>();
        for(;cnt<=k1;){
            int[] a=new int[4];
            boolean fl=true;
            for(int i=0;i<4;i++) {
                a[i] = getrandom(mi, ma);
                if(a[i]<=0)fl=false;
            }
            if(!fl)continue;
            char[] c= new char[3];
            for(int i=0;i<3;i++)
                c[i]=getchar(s);
            Stack<Integer>stk=new Stack<>();
            Stack<Character>stck=new Stack<>();
            int ans;
            String si="";
            for(int i=0;i<3;i++){
                si+=a[i];
                si+=c[i];
            }si+=a[3];
            int num=0;
            boolean f=true;
            for(int i=0;i<si.length();i++){
                if(si.charAt(i)<='9'&&si.charAt(i)>='0'){
                    num=num*10+si.charAt(i)-'0';
                }else{
                    stk.add(num);
                    num=0;
                    if(stck.empty()||ap.get(si.charAt(i))>ap.get(stck.peek()))stck.add(si.charAt(i));
                    else{
                        int num2=stk.peek();stk.pop();
                        int num1=stk.peek();stk.pop();
                        char ch=stck.peek();stck.pop();
                        int sum=0;
                        if(ch=='-')sum=num1-num2;
                        else if(ch=='+'){
                            sum=num1+num2;
                            if(sum>1000){
                                f=false;break;
                            }
                        }else if(ch=='*'){
                            sum=num1*num2;
                            if(sum>1000){
                                f=false;break;
                            }
                        }else{
                            if(num1%num2!=0){
                                f=false;break;
                            }
                            sum=num1/num2;
                        }
                        stk.add(sum);
                        while(!stck.empty()&&ap.get(si.charAt(i))<=ap.get(stck.peek())){
                            num2=stk.peek();stk.pop();
                            num1=stk.peek();stk.pop();
                            ch=stck.peek();stck.pop();
                            sum=0;
                            if(ch=='-')sum=num1-num2;
                            else if(ch=='+'){
                                sum=num1+num2;
                            }else if(ch=='*'){
                                sum=num1*num2;
                            }else{
                                if(num1%num2!=0){
                                    f=false;
                                }
                                sum=num1/num2;
                            }
                            stk.add(sum);
                        }
                        stck.add(si.charAt(i));
                    }
                }
            }
            if(!f)continue;
            stk.add(num);
            while(!stck.empty()){
                int num2=stk.peek();stk.pop();
                int num1=stk.peek();stk.pop();
                char ch=stck.peek();stck.pop();
                int sum=0;
                if(ch=='-'){
                    sum=num1-num2;
                }
                else if(ch=='+'){
                    sum=num1+num2;
                    if(sum>1000){
                        f=false;break;
                    }
                }else if(ch=='*'){
                    sum=num1*num2;
                    if(sum>10000){
                        f=false;break;
                    }
                }else{
                    if(num1%num2!=0){
                        f=false;break;
                    }
                    sum=num1/num2;
                }
                stk.add(sum);
            }
            if(!f)continue;
            ans=stk.peek();
            mp.put(si,ans);
            Pair<String,Integer>p=new Pair<>(si,ans);
            li.add(p);cnt++;
        }
        int id=1;
        long time=System.currentTimeMillis()/1000;
        for(Pair<String,Integer> p:li){
            long ti=System.currentTimeMillis()/1000;
            if(ti-time>t)break;
            else System.out.printf("还有%ds\n",t-(ti-time));
            System.out.println(""+id+":"+p.getKey()+"=");id++;
            String sk=p.getKey();
            int g=sc.nextInt(),ans=p.getValue();
            if(g==ans) {System.out.println("答案正确！");numyes++;cntyes++;}
            else {System.out.printf("答案错误  ------  正确答案为:%d\n",ans);
                System.out.println();
                numno++;
                set.add(sk);
                if(ss.containsKey(sk))ss.put(sk,ss.get(sk)+1);
                else ss.put(sk,1);
            }
        }
        System.out.printf("错题数为:%d，正确率为:%d\n",k1-cntyes,cntyes*100/k1);
        try(PrintWriter wirter=new PrintWriter ("problems2.txt")){
            String an="";
            int cntc=0;
            for(Pair<String,Integer> p:li){
                cntc++;
                an+=p.getKey();
                an+="=";
                an+=p.getValue();
                an+="     ";
                wirter.print(an);
                if(cntc%3==0)wirter.println();
                an="";
            }
        }
        catch (FileNotFoundException e){
            e.printStackTrace();
        }
        show2();
        int n=sc.nextInt();
        if(n==1){
            return;
        }else if(n==2){
            index();
        }else{
            secondtest();
        }
    }
    public static void forth(boolean f1,boolean f2,int k1,int ma,int mi){
        String s;
        if(f1)s="+-*/";
        else s="+-+-";
        Random r=new Random();
        Map<Character,Integer>ap=new HashMap<>();
        ap.put('+',1);ap.put('-',1);ap.put('/',2);ap.put('*',2);
        ap.put('(',3);
        System.out.println("设置倒计时时间:");
        Scanner sc=new Scanner(System.in);
        int t=sc.nextInt();
        int cnt=1,cntyes=0;
        List<Pair<String,Integer>>li=new ArrayList<>();
        int y=0;
        for(;cnt<=k1;){
            int l=getrandom(1,4),lr=getrandom(1,4);
            if(l>4||l<=0||lr<=0||lr>4||l==lr)continue;
            int minl=Math.min(l,lr);
            int maxr=Math.max(l,lr);
            minl--;maxr--;
            int[] a=new int[5];
            boolean fl=true;
            for(int i=0;i<5;i++) {
                a[i] = getrandom(mi,ma);
                if(a[i]<=0)fl=false;
            }
            if(!fl)continue;
            char[] c= new char[4];
            for(int i=0;i<4;i++)
                c[i]=getchar(s);
            Stack<Integer>stk=new Stack<>();
            Stack<Character>stck=new Stack<>();
            int ans;
            String si="";

            for(int i=0;i<4;i++){
                if(i==minl)si+="(";
                si+=a[i];
                if(i==maxr)si+=")";
                si+=c[i];
            }si+=a[4];
            int num=0;
            boolean f=true;
            //790+(2731/3714*2435)-4446
            for(int i=0;i<si.length();i++){
                if(si.charAt(i)<='9'&&si.charAt(i)>='0'){
                    num=num*10+si.charAt(i)-'0';
                }else{
                    if(num!=0)stk.add(num);
                    num=0;
                    if(si.charAt(i)==')'){
                        while(stck.peek()!='('){
                            if(stk.size()<2){
                                f=false;break;
                            }
                            int num2=stk.peek();stk.pop();
                            int num1=stk.peek();stk.pop();
                            char ch=stck.peek();stck.pop();
                            int sum=0;
                            if(ch=='-'){
                                sum=num1-num2;
                            }
                            else if(ch=='+'){
                                sum=num1+num2;
                            }else if(ch=='*'){
                                sum=num1*num2;
                            }else{
                                if(num1%num2!=0){
                                    f=false;
                                }
                                sum=num1/num2;
                            }
                            stk.add(sum);
                        }
                        if(!f)break;
                        stck.pop();
                    }
                    else {
                        if (stck.empty() || ap.get(si.charAt(i)) > ap.get(stck.peek())){
                            stck.add(si.charAt(i));
                            if(si.charAt(i)=='(')ap.put('(',0);
                        }
                        else {
                            if(stk.size()<2){
                                f=false;break;
                            }
                            int num2=stk.peek();stk.pop();
                            int num1=stk.peek();stk.pop();
                            char ch=stck.peek();stck.pop();
                            int sum=0;
                            if(ch=='-')sum=num1-num2;
                            else if(ch=='+'){
                                sum=num1+num2;
                            }else if(ch=='*'){
                                sum=num1*num2;
                            }else{
                                if(num1%num2!=0){
                                    f=false;
                                }
                                sum=num1/num2;
                            }
                            if(!f)break;
                            stk.add(sum);
                            while(!stck.empty()&&ap.get(si.charAt(i))<=ap.get(stck.peek())){
                                if(stk.size()<2){
                                    f=false;break;
                                }
                                num2=stk.peek();stk.pop();
                                num1=stk.peek();stk.pop();
                                ch=stck.peek();stck.pop();
                                sum=0;
                                if(ch=='-')sum=num1-num2;
                                else if(ch=='+'){
                                    sum=num1+num2;
                                }else if(ch=='*'){
                                    sum=num1*num2;
                                }else{
                                    if(num1%num2!=0){
                                        f=false;
                                    }
                                    sum=num1/num2;
                                }
                                stk.add(sum);
                            }
                            if(!f)break;
                            stck.add(si.charAt(i));
                        }
                    }
                }
            }
            if(!f)continue;
            stk.add(num);
            while(!stck.empty()){
                if(stk.size()<2){
                    f=false;break;
                }
                int num2=stk.peek();stk.pop();
                int num1=stk.peek();stk.pop();
                char ch=stck.peek();stck.pop();
                int sum=0;
                if(ch=='-'){
                    sum=num1-num2;
                }
                else if(ch=='+'){
                    sum=num1+num2;
                }else if(ch=='*'){
                    sum=num1*num2;
                }else{
                    if(num1%num2!=0){
                        f=false;
                    }
                    sum=num1/num2;
                }
                stk.add(sum);
            }
            if(!f)continue;
            ans=stk.peek();
            mp.put(si,ans);
            Pair<String,Integer>p=new Pair<>(si,ans);
            li.add(p);
            cnt++;
        }
        int id=1;
        long time=System.currentTimeMillis()/1000;
        for(Pair<String,Integer> p:li){
            long ti=System.currentTimeMillis()/1000;
            if(ti-time>t)break;
            else System.out.printf("还有%ds\n",t-(ti-time));
            System.out.println(""+id+":"+p.getKey()+"=");id++;
            String sk=p.getKey();
            int g=sc.nextInt(),ans=p.getValue();
            if(g==ans) {System.out.println("答案正确！");numyes++;cntyes++;}
            else {System.out.printf("答案错误  ------  正确答案为:%d\n",ans);
                System.out.println();
                numno++;
                set.add(sk);
                if(ss.containsKey(sk))ss.put(sk,ss.get(sk)+1);
                else ss.put(sk,1);
            }
        }
        System.out.printf("错题数为:%d，正确率为:%d\n",k1-cntyes,cntyes*100/k1);
        try(PrintWriter wirter=new PrintWriter ("problems3.txt")){
            String an="";
            int cntc=0;
            for(Pair<String,Integer> p:li){
                cntc++;
                an+=p.getKey();
                an+="=";
                an+=p.getValue();
                an+="     ";
                wirter.print(an);
                if(cntc%3==0)wirter.println();
                an="";
            }
        }
        catch (FileNotFoundException e){
            e.printStackTrace();
        }
        show2();
        int n=sc.nextInt();
        if(n==1){
            return;
        }else if(n==2){
            index();
        }else{
            secondtest();
        }
    }
    public static void index(){
        Scanner sc=new Scanner(System.in);
        int k=1;
        for(String sy:set){
            System.out.printf("%d:%s=       错题次数为%d\n",k++,sy,ss.get(sy));
        }
        System.out.printf("错题数:%d，正确率:%d\n",numno,numyes/(numno+numyes));
        System.out.println("是否进行二次做题(y/n)");
        String s=sc.next();
        if(s.equals("y"))secondtest();
    }
    public static void secondtest(){
        int k=1;
        Scanner sc=new Scanner(System.in);
        for(String sy:set){
            System.out.printf("%d:%s=",k++,sy);
            int ans=sc.nextInt();
            if(ans==mp.get(sy)){
                System.out.println("回答正确！");
            }else{
                System.out.printf("答案错误！---- 答案为:%d\n",mp.get(sy));
                ss.put(sy,ss.get(sy)+1);
            }
        }
    }
}