小游戏算24

[java]代码库
import javax.swing.*;
import java.util.*;
 
public class GameCount24{
    public static void main(String args[]){
        int[] arr1 = new int[4];
        String result = "";
        String pai;
        String input;
        int i;
        int out;
        Random ran = new Random();
        for(i=0;i<arr1.length;i++){
            arr1[i] =  ran.nextInt(13)+1;
             
            switch(arr1[i]){
            case 1: pai = "A";break;
            case 11: pai = "J";break;
            case 12: pai = "Q";break;
            case 13: pai = "K";break;
            default : pai = String.valueOf(arr1[i]);
            }
            result += pai + " ";
             
        }
        input = JOptionPane.showInputDialog("取出的牌为："+result);
        //input = "3+2*(4-2)=";
         
        char[] in = new char[input.length()];
        for(i=0;i<input.length();i++){
            in[i] = input.charAt(i);
        }
         
        Caclulate ca = new Caclulate();
        //JOptionPane.showMessageDialog(null,n);
        out =  ca.calculator(in,arr1);
        if (out == 24)
            JOptionPane.showMessageDialog(null,input +out+"胜利！");
        else
            JOptionPane.showMessageDialog(null,input +out+"失败！");
        //System.out.println( "结果 ："+ca.calculator(in));
    }   
}
 
class Caclulate{    
     
    int n0=30; 
    int[] s1 = new int[n0+1]; //操作数栈 
    char[] s2 = new char[n0+1]; //运算符栈 
    int t1,t2; 
    int PaiCnt;
 
    void calcu() //一次计算 
    { 
        int x1,x2,x; 
        char p; 
        //弹出一个运算符 
        p=s2[t2--]; 
        //弹出两个操作数 
        x2=s1[t1--]; 
        x1=s1[t1--]; 
        //进行一次运算 
        switch(p) { 
        case '+':x=x1+x2;break; 
        case '-':x=x1-x2;break; 
        case '*':x=x1*x2;break; 
        default:x=x1/x2; 
        } 
        //结果压入操作数栈 
        s1[++t1]=x; 
        System.out.println("结果压入操作数栈s1["+t1+"]="+x);
    } 
    void CheckPai(int[]pai)
    {
        int i=0,j=0;
        /*if(t1!=4){
            System.out.println("牌数不为4");
            System.exit(0);
        }*/
        for(i=0;i<t1;i++){
            for(j=0;j<4;j++)
                if(s1[i]==pai[j])break;
            if(j>=4){
                System.out.println("牌"+s1[i]+"非法");
                System.exit(0);
            }
                 
        }
    }
 
    int calculator(char[]f,int[]pai) 
    { 
        int v,i=0,j=0; 
        char[] p = f;
        t1=t2=0; //设置空栈 
        PaiCnt=0;
        if(p[f.length-1]!='='){
            System.out.println("字符串以'='结束");
            System.exit(0);
        }
             
        while (p[i]!='=') 
            switch(p[i]) { 
            case '+': case '-': 
                while (t2!=0&&(s2[t2]!='(')) 
                //执行先遇到的加、减、乘、除运算 
                calcu(); 
                //当前运算符进栈 
                s2[++t2]=p[i]; 
                //读下一个字符 
                System.out.println("运算符进栈s2["+t2+"]="+s2[t2]);
                i++; 
                break; 
            case '*': case '/': 
                if (t2!=0&&(s2[t2]=='*')||(s2[t2]=='/')) 
                //执行先遇到的乘、除运算 
                calcu(); 
                //当前运算符进栈 
                s2[++t2]=p[i]; 
                //读下一个字符 
                i++; 
                System.out.println("运算符进栈s2["+t2+"]="+s2[t2]);
                break; 
            case '(': 
                //左括号进栈 
                s2[++t2]=p[i]; 
                //读下一个字符 
                i++; 
                System.out.println("运算符进栈s2["+t2+"]="+s2[t2]);
                break; 
            case ')': 
                while (s2[t2]!='(') 
                //执行括号内的加、减、乘、除运算 
                calcu(); 
                //弹出左括号 
                t2--; 
                //读下一个字符 
                System.out.println("弹出左括号");
                i++; 
                break; 
            default: 
                //把字符串转换成整数值 
                v=0; 
                do { 
                    v = 10*v+p[i]-'0';  //将一个数字字符或连续的数字字符转换为数值类型的量
                    i++; 
                } while((p[i]>='0')&&(p[i]<='9')); 
                //操作数进栈 
                s1[++t1]=v; 
                CheckPai(pai);
                PaiCnt++;
                System.out.println("操作数进栈s1["+t1+"]="+s1[t1]);
                //num[j++]=v; 
            }; 
         
        //执行先遇到的加、减、乘、除运算 
        while (t2!=0) calcu(); 
         
        //返回结果 
        return s1[t1]; 
    } 
     
}
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