java实现假分数加减乘除运算

下面是Java实现假分数加减乘除运算的示例代码：

public class Fraction {
    private int numerator;  // 分子
    private int denominator;  // 分母

    public Fraction(int numerator, int denominator) {
        this.numerator = numerator;
        this.denominator = denominator;
    }

    // 获取分子
    public int getNumerator() {
        return numerator;
    }

    // 获取分母
    public int getDenominator() {
        return denominator;
    }

    // 转化为假分数
    public Fraction toImproperFraction() {
        int newNumerator = numerator + denominator * (numerator < 0 ? -1 : 1);
        return new Fraction(newNumerator, denominator);
    }

    // 加法
    public static Fraction add(Fraction f1, Fraction f2) {
        int newNumerator = f1.getNumerator() * f2.getDenominator() + f2.getNumerator() * f1.getDenominator();
        int newDenominator = f1.getDenominator() * f2.getDenominator();
        return new Fraction(newNumerator, newDenominator).toImproperFraction();
    }

    // 减法
    public static Fraction subtract(Fraction f1, Fraction f2) {
        int newNumerator = f1.getNumerator() * f2.getDenominator() - f2.getNumerator() * f1.getDenominator();
        int newDenominator = f1.getDenominator() * f2.getDenominator();
        return new Fraction(newNumerator, newDenominator).toImproperFraction();
    }

    // 乘法
    public static Fraction multiply(Fraction f1, Fraction f2) {
        int newNumerator = f1.getNumerator() * f2.getNumerator();
        int newDenominator = f1.getDenominator() * f2.getDenominator();
        return new Fraction(newNumerator, newDenominator).toImproperFraction();
    }

    // 除法
    public static Fraction divide(Fraction f1, Fraction f2) {
        int newNumerator = f1.getNumerator() * f2.getDenominator();
        int newDenominator = f1.getDenominator() * f2.getNumerator();
        return new Fraction(newNumerator, newDenominator).toImproperFraction();
    }

    // 输出假分数
    public String toString() {
        int integerPart = numerator / denominator;
        int newNumerator = numerator % denominator;
        if (newNumerator == 0) {
            return String.valueOf(integerPart);
        }
        return integerPart + " " + newNumerator + "/" + denominator;
    }
}

接下来是一个简单的测试：

public class Main {
    public static void main(String[] args) {
        Fraction f1 = new Fraction(3, 4);
        Fraction f2 = new Fraction(1, 2);
        Fraction sum = Fraction.add(f1, f2);
        Fraction difference = Fraction.subtract(f1, f2);
        Fraction product = Fraction.multiply(f1, f2);
        Fraction quotient = Fraction.divide(f1, f2);
        System.out.println(f1 + " + " + f2 + " = " + sum);
        System.out.println(f1 + " - " + f2 + " = " + difference);
        System.out.println(f1 + " * " + f2 + " = " + product);
        System.out.println(f1 + " / " + f2 + " = " + quotient);
    }
}

输出结果应该为：

3/4 + 1/2 = 5/4
3/4 - 1/2 = 1/4
3/4 * 1/2 = 3/8
3/4 / 1/2 = 3/2