20150421 作业5 四则运算 测试与封装 5.1

import java.util.ArrayList;
import java.util.Random;
import java.util.Scanner;

public class fengzhuang {// Software Engineering 軟件工程 作業2
    static String jia = "+";
    static String jian = "-";
    static String cheng = "*";
    static String chu = "/";
    String shizi9 = null;
    RN daan9;
    double daan12;
    String shuru;
    double shuruZH;
    int zhengque, cuowu;

    public double strto12(String daan) {
        return Math.round(Double.parseDouble(daan) * 100) / 100.0;
    }

    public int panduan(String[] input, String[] Answer) {
        int count = 0;
        for (int i = 0; i < Answer.length; i++) {
            if (Double.parseDouble(input[i]) == Double.parseDouble(Answer[i])
                    || Double.parseDouble(input[i]) == Math.round(Double
                            .parseDouble(Answer[i]) * 100) / 100.0)
                count++;
        }
        return count;
    }

    public void setcuowu(int cuowu) {
        this.cuowu = cuowu;
    }

    public void setzhengque(int zhengque) {
        this.zhengque = zhengque;
    }

    public int getcuowu() {
        return cuowu;
    }

    public int getzhengque() {
        return zhengque;
    }

    public boolean panduandaan() {
        if (daan9.getSign() == 0
                && (getshuruZH() == getdaan9number() || getshuruZH() == getdaan12()))
            return true;
        else if (daan9.getSign() == 2 && getshuruZH() == getdaan9number())
            return true;
        else
            return false;
    }

    public void setshuru(String shuru) {
        this.shuru = shuru;
    }

    public String getshuru() {
        return shuru;
    }

    public double str_daanTodouble_daan12(String daan) {
        return 1;// !!!
    }

    public void setshuruZH() {
        shuruZH = Input(getshuru()).getNumber();
    }

    public double getshuruZH() {
        return shuruZH;
    }

    public void setshizi9(String shizi) {
        shizi9 = shizi;
    }

    public String getshizi9() {
        return shizi9;
    }

    public void setdaan12byStr(String daan) {
        daan12 = Math.round(Double.parseDouble(daan) * 100) / 100.0;
    }

    public void setdaan12(double daan) {
        daan12 = Math.round(daan * 100) / 100.0;
    }

    public double getdaan12() {
        return daan12;
    }

    public void setdaan9(RN daan) {
        daan9 = daan;
        setdaan12(daan9.getNumber());
    }

    public RN getdaan9() {
        return daan9;
    }

    public double getdaan9number() {
        return daan9.getNumber();
    }

    public RN Input(String input) {
        RN temp = this.new RN();
        if (input.contains("/")) {
            temp.setMolecular(Integer.parseInt(input.substring(0,
                    input.indexOf("/"))));
            temp.setDenominator(Integer.parseInt(input.substring(input
                    .indexOf("/") + 1)));
            temp.setSign(2);
        } else {
            temp.setDecimal(Double.parseDouble(input));
            temp.setSign(0);
        }
        return temp;
    }

    public double jiechengdaan(int n, double all) {
        if (n < 0)
            return 0;
        else if (n == 0)
            return 1;
        else if (n == 1)
            return all;
        else
            return jiechengdaan(n - 1, n * all);
    }

    public double jiecheng() {
        int jiecheng = new Random().nextInt(10);
        System.out.print(jiecheng + "!=");
        return jiechengdaan(jiecheng, 1);
    }

    public void fangfa(ArrayList<String> A, ArrayList<RN> O, String what) {//这里是将式子求出答案过程的方法     封装起来了！！！！！
        int index = A.indexOf(what);
        if (what.equals(cheng)) {
            O.set(index, new RN(O.get(index).getNumber()
                    * O.get(index + 1).getNumber(), 0));
        } else if (what.equals(chu)) {
            O.set(index, new RN(O.get(index).getNumber()
                    / O.get(index + 1).getNumber(), 0));
        } else if (what.equals(jia)) {
            O.set(index, new RN(O.get(index).getNumber()
                    + O.get(index + 1).getNumber(), 0));
        } else {
            O.set(index, new RN(O.get(index).getNumber()
                    - O.get(index + 1).getNumber(), 0));
        }
        O.remove(index + 1);
        A.remove(index);
    }//这里是将式子求出答案过程的方法     封装起来了！！！！！

    public RN getAnswer(RN[] Operand, String[] AS) {
        ArrayList<String> A = new ArrayList<String>();
        ArrayList<RN> O = new ArrayList<RN>();
        System.out.println();
        for (String as : AS) {
            A.add(as);
            // System.out.print(as + "  ");
        }
        System.out.println();
        for (RN op : Operand) {
            O.add(op);
            // System.out.print(op.getNumber() + "  ");
        }
        System.out.println();
        while (A.get(0) != "=") {
            if (A.contains(cheng) || A.contains(chu)) {
                if (((A.contains(cheng) ^ A.contains(chu)) == true ? (A
                        .contains(cheng) == true ? true : false) : (A
                        .indexOf(cheng) < A.indexOf(chu) ? true : false)))
                    fangfa(A, O, cheng);//此处调用了封装的方法
                else
                    fangfa(A, O, chu);//此处调用了封装的方法
            } else if (A.contains(jia) || A.contains(jian)) {
                if (((A.contains(jia) ^ A.contains(jian)) == true ? (A
                        .contains(jia) == true ? true : false) : (A
                        .indexOf(jia) < A.indexOf(jian) ? true : false)))
                    fangfa(A, O, jia);//此处调用了封装的方法
                else
                    fangfa(A, O, jian);//此处调用了封装的方法

            } else
                System.out.println("error!!");
            O.trimToSize();
            A.trimToSize();
        }
        return O.get(0);
    }

    public void GA() {// Generation algorithm 生成算式
        int number = new Random().nextInt(4) + 2;
        RN[] Operand = new RN[number];
        String[] AS = new String[number];
        AS[number - 1] = "=";
        String shizi2 = "";
        for (int i = 0; i < number; i++) {// 生成 number 个操作数
            Operand[i] = new RN();
            switch (new Random().nextInt(2) + 1) {// 這裏設置了Int(2)+1略過 小數
            // ifInt(3)就會出現小數
            case 0:// 小数[0~1.0) *100
                do
                    Operand[i]
                            .setDecimal(((int) (new Random().nextDouble() * 19900)) / 100.0 - 99);
                while (Operand[i].getDecimal() == 0);
                Operand[i].setSign(0);

                break;
            case 1:// 整数[0~n)
                do
                    Operand[i].setInteger(new Random().nextInt(199) - 99);
                while (Operand[i].getInteger() == 0);
                Operand[i].setSign(1);
                break;
            case 2:// 分数
                do
                    Operand[i].setMolecular(new Random().nextInt(199) - 99);
                while (Operand[i].getMolecular() == 0);
                Operand[i].setDenominator(new Random().nextInt(99) + 1);
                Operand[i].setSign(2);
                break;
            default:
                System.exit(0);
            }
            if (i > 0)
                switch (new Random().nextInt(4)) {
                case 0:
                    AS[i - 1] = jia;
                    break;
                case 1:
                    AS[i - 1] = jian;
                    break;
                case 2:
                    AS[i - 1] = cheng;
                    break;
                case 3:
                    AS[i - 1] = chu;
                    break;
                default:
                    System.exit(0);
                }
        }
        for (int i = 0; i < number; i++) {
            shizi2 = shizi2.concat((Operand[i].getNumber() < 0 ? "(" : "")
                    + Operand[i].toString()
                    + (Operand[i].getNumber() < 0 ? ")" : "") + " " + AS[i]
                    + " ");
        }
        setshizi9(shizi2);
        setdaan9(getAnswer(Operand, AS));
    }

    public class F {// Fraction 分數
        int Molecular;// 分子
        int Denominator = 0;// 分母

        void setMolecular(int Molecular) {
            this.Molecular = Molecular;
        }

        int getMolecular() {
            return Molecular;
        }

        void setDenominator(int Denominator) {
            this.Denominator = Denominator;
        }

        int getDenominator() {
            return Denominator;
        }

        double getAll() {
            return (double) Molecular / Denominator;
        }

        public String toString() {
            return Molecular + "/" + Denominator;
        }
    }

    public class RN {// Random Number 隨機數
        double Decimal;// 小數
        int Integer;// 整數
        F Fraction = new F();// 分數

        int Sign;// 標誌該對象中存儲的是什麼數

        public RN() {

        }

        public RN(double Decimal, int Sign) {
            this.Decimal = Decimal;
            this.Sign = Sign;
        }

        void setDecimal(double Decimal) {
            this.Decimal = Decimal;
        }

        double getDecimal() {
            return Decimal;
        }

        void setInteger(int Integer) {
            this.Integer = Integer;
        }

        int getInteger() {
            return Integer;
        }

        void setMolecular(int Molecular) {
            this.Fraction.setMolecular(Molecular);
        }

        int getMolecular() {
            return this.Fraction.getMolecular();
        }

        void setDenominator(int Denominator) {
            this.Fraction.setDenominator(Denominator);
        }

        int getDenominator() {
            return this.Fraction.getDenominator();
        }

        void setSign(int Sign) {
            this.Sign = Sign;
        }

        int getSign() {
            return Sign;
        }

        double getNumber() {
            switch (Sign) {
            case 0:
                return Decimal;
            case 1:
                return Integer;
            case 2:
                return Fraction.getAll();
            default:
                return -1;
            }
        }

        public String toString() {
            return Fraction.getDenominator() == 0 ? (Integer == 0 ? Decimal
                    + "" : Integer + "") : Fraction.toString();
        }
    }

    public static void main(String [] args){
        fengzhuang test = new fengzhuang();
        test.GA();
        System.out.println(test.getshizi9());
        Scanner in =new Scanner(System.in);
        //System.out.println("答案是："+test.getdaan12());
        test.setshuru(in.next());
        test.setshuruZH();
        if(test.panduandaan())
            System.out.println("true");
        else System.out.println("false");
    }

}

其实我这个程序很多方法都已经封装好了，因为机房没有用jsp的环境，所以我在这个java类里面随便写了个main函数来调用我的程序里面的各种方法，可能main函数里面实现的功能比较简陋。但是足以体现出封装 计算答案的那个类了。

即 fangfa(ArrayList<String>, ArrayList<RN>, String)，

getAnswer(RN[], String[]) 中会频繁用到以上方法。

结对同伴：