10.13

今天是在课上写了java四则运算的下一次升级：

package suanshu;
import java.util.*; 
public class Suanshu {
    private static int [][]shu1=new int[100][100];//cun ru suo you de a de shu ju
    private static int [][]shu3=new int[100][100];//cun ru suo you de b de shu ju
    private static long []zhengquedaan=new long[100];//cun chu suo you zheng que da an
    private static int shu;//xuan ze jin xing ji ge shu de jia jian cheng chu
    private static int tiLiang;// xuan ze ti mu shu liang
    private static int chengChu;//pan duan shu fou you cheng chu fa
    private static int quZhiFanWei1;//qu zhi de qi shi zhi
    private static int quZhiFanWei2;//qu zhi de zhong zhi zhi
    private static long sum;//yong yu cun ru suan shi jie guo ,mei ci suan wuan zhi hou dou hui shua xin
    private static int[] cuoticishu=new int[100];//ji lu cuo ti shu
    private static long []cuotidaan=new long[100];//bao cuo tuo ti da an
    public static void yunsuanfu1(int c) {
        if(c==1) {
            System.out.print("+");
            
        }
        if(c==2) {
            System.out.print("-");
            
        }
        if(c==3) {
            System.out.print("*");
            
        }
        if(c==4) {
            System.out.print("/");
        }
    }
    public static void yunsuanfu2(int c) {
        if(c==1||c==2) {
            System.out.print("+");
            
        }
        if(c==3||c==4) {
            System.out.print("-");
            
        }
    }
    public static void Schutisanshu() {
        Scanner s = new Scanner(System.in);
        System.out.print("请选择题目数量：");
        tiLiang=s.nextInt();
        System.out.print("请选择是否有乘除法，是则输入1，否输入0");
        chengChu=s.nextInt();
        System.out.print("请选择取值范围：");
        quZhiFanWei1=s.nextInt();
        System.out.print("-");
        quZhiFanWei2=s.nextInt();
        System.out.print("请选择操作数个数：");
        shu=s.nextInt();
    }
    public static char zhuanhuan1(int a) {
        if(a==1) {
            return '+';
        }
        if(a==2) {return '-';}
        if(a==3) {return '*';}
        if(a==4) {return'/';}
        return 0;
    }
    public static char zhuanhuan2(int a) {
        if(a==1||a==2) {
            return '+';
        }
        if(a==3||a==4) {return '-';}

        return 0;
    }
    public static int Pchongfu(int i,int shu,int[] sh,int[] ch,int asd) {//pan duan ti mu shi fou chong fu
        int j,k;
        boolean panduan=true;
        if(i>=1) {
        for(j=0;j<i;j++) {
            for(k=0;k<shu;k++) {
            if(shu1[j][k]==sh[k]) {
                if(k<shu-1) 
                {if(shu3[j][k]==ch[k]) {
                asd++;}}
            
            }
    
            if(asd==shu) {panduan=false;}}
        }}
        if(panduan==false) {//dang suan shi chong fu shi,jin xing xia ci xun huan,i-1
            return i-1;
        }
        return i;
    }
    public static void Ssuijishu(int[]sh,int[]ch) {
        int i,j,k;
    
        for(i=0;i<tiLiang;i++) {
            Random rand1 = new Random();
            Random x =new Random();//jue ding yun suan fu hao
            for(k=0;k<shu;k++) {
             sh[k]=rand1.nextInt(quZhiFanWei2-quZhiFanWei1+1) + quZhiFanWei1;
            shu1[i][k]=sh[k];
            if(k<shu-1) {
            ch[k]=x.nextInt(4)+1;
            shu3[i][k]=ch[k];}
            }
    }}
    public static void suandaan1(int a,int b) {
        if(b==1) {
            sum=sum+a;
        }
        if(b==2) {
            sum=sum-a;
        }
        if(b==3) {
            sum=sum*a;
        }
        if(sum==4) {
            sum=sum/a;
        }
    }
    public static void suandaan2(int a,int b) {
        if(b==1||b==2) {
            sum=sum+a;
        }
        if(b==3||b==4) {
            sum=sum-a;
        }

    }
    public static void Zuoti(boolean panduan,int bb,int i) {
        int k,aa;
        Random randx=new Random();
        if(panduan==true&&chengChu==1) {

                for(k=0;k<shu;k++) {
                    System.out.print(shu1[i][k]);
                
                    aa=randx.nextInt(100)+1;
                    if(k==0) {
                        sum=shu1[i][k];
                    }
                    if(aa>30&&aa<60) {
                        if(bb==2) {
                            System.out.print(")");
                            bb++;
                        }
                    }
                    if(bb==2&&k==shu-1) {
                        System.out.print(")");
                    }
                    
                    if(k<shu-1) {
                        
                    yunsuanfu1(shu3[i][k]);
                    if(aa>30&&aa<60) {
                        if(bb==1) {
                            System.out.print("(");
                            bb++;
                        }
                    }
                    }if(k<shu-1) {
                    suandaan1(shu1[i][k+1],shu3[i][k]);}
                }
                System.out.print("=
");
                zhengquedaan[i]=sum;
                sum=0;
        }
        if(panduan==true&&chengChu==0) {
            for(k=0;k<shu;k++) {
            
                aa=randx.nextInt(70)+1;
                if(k==0) {
                    sum=shu1[i][k];
                }
                System.out.print(shu1[i][k]);
                if(aa>30&&aa<60) {
                    if(bb==2) {
                        System.out.print(")");
                        bb++;
                    }
                }
                if(bb==2&&k==shu-1) {
                    System.out.print(")");
                }
                if(k<shu-1) {
                
                yunsuanfu2(shu3[i][k]);
                if(aa>30&&aa<60) {
                    if(bb==1) {
                        System.out.print("(");
                        bb++;
                    }
                }
                }if(k<shu-1) {suandaan2(shu1[i][k+1],shu3[i][k]);}

            }
            zhengquedaan[i]=sum;
            System.out.print("=
");
            sum=0;

        }
    }
    public static void cuotiji(boolean panduan,boolean[] duicuo) {
        int k,i;
        for(i=0;i<tiLiang;i++) {
            if(duicuo[i]==false) {
        
        if(panduan==true&&chengChu==1) {

                for(k=0;k<shu;k++) {
                    System.out.print(shu1[i][k]);
                    
                    if(k<shu-1) {
                    yunsuanfu1(shu3[i][k]);
                    }
                }
                System.out.print("=
");
        }
        if(panduan==true&&chengChu==0) {
            for(k=0;k<shu;k++) {
                System.out.print(shu1[i][k]);
                if(k<shu-1) {
                yunsuanfu2(shu3[i][k]);
                }
                }

            }

            System.out.print("=
");}
        }

        }
    public  static void cuotichonglian(boolean panduan,boolean[] duicuo,int cuowushu) {
        int i;
        int daan;
        Scanner in = new Scanner(System.in);
        cuotiji(panduan,duicuo);
        System.out.println("请依次输入答案：");
        for(i=0;i<cuowushu;i++) {
            System.out.print("1.");
            daan=in.nextInt();
            if(daan!=cuotidaan[i]) {
                System.out.println("错误，正确答案为："+cuotidaan[i]);
                cuoticishu[i]++;
            }
        }
        
    } 
    public static void main(String[] args) {
        int i,j=0;
        int choose1;
        double zhengqueshu=0,cuowushu=0;
        double zhengquelv;
        double yonghudaan;
        int bb;//aa yong yu panduan shi fou jia kuo hao
        Scanner s = new Scanner(System.in);
        int[] sh=new int[100];//yong yu jie shou sui ji shu
        int[] ch=new int[100];
        boolean[] duicuo=new boolean[100];
        Schutisanshu();
        int asd=0;//yi ge yong yu pan duan panduan shi fou wei true huo false de bianlinag
        boolean panduan=true;//pan duan shi fou chong fu
        Ssuijishu(sh,ch);
        for(i=0;i<100;i++) {
            cuoticishu[i]=1;
        }
        for(i=0;i<tiLiang;i++) {
            System.out.print((i+1)+".");
            bb=1;
            
            if(i==Pchongfu(i,shu,sh,ch,asd)) {panduan=true;}
            if(i!=Pchongfu(i,shu,sh,ch,asd)) {panduan=false;}
            i=Pchongfu(i,shu,sh,ch,asd);
            Zuoti(panduan, bb, i);
            yonghudaan=s.nextDouble();
            if(yonghudaan==zhengquedaan[i]) {
                duicuo[i]=true;
            }
            else {duicuo[i]=false;
            cuotidaan[j]=zhengquedaan[i];
            j++;
            }
}
        for(i=0;i<tiLiang;i++) {
            if(duicuo[i]==true) {zhengqueshu++;}
            else cuowushu++;
            System.out.print((i+1)+".");
            System.out.print(duicuo[i]);
        }
        zhengquelv=(zhengqueshu/(zhengqueshu+cuowushu))*100;
        System.out.print("
正确率：");
        System.out.println(zhengquelv+"%");
        cuotiji(panduan,duicuo);
        System.out.print("请选择是否进行错题重做，是输入1，否输入2");
        choose1=s.nextInt();
        while(choose1==1) {
            cuotichonglian(panduan,duicuo,(int)cuowushu);
            for(i=0;i<(int)cuowushu;i++) {
                System.out.print("第"+(i+1)+"道错题错误次数为"+cuoticishu[i]);
                System.out.print("
");
            }
            System.out.print("请选择是否继续，是输入1，否输入2：");
            choose1=s.nextInt();
        }
        System.out.print("
程序结束");
}}