java 用java简化分数

Simplifying Fractions With java

提问by user759630

Hey guys I am working on a SW here I am kinda in need of help, you see we need to make a method where we are gonna simplify fractions. any idea how? here's my code as of now (don't mind the dvalue Method it is already finsih all I need is the simplify method)

嘿伙计们，我正在这里开发软件，我有点需要帮助，你看我们需要制定一种方法来简化分数。知道怎么做吗？这是我现在的代码（不要介意 dvalue 方法，它已经完成了，我只需要简化方法）

public class Fraction {

    public int num;
    public int den;
    public double dValue;

    public void display()
    {
        System.out.println("Numerator: "+num);
        System.out.println("Denominator: "+den);
    }

    public double dValue()
    {
        dValue = (double)num/den;
        return dValue;
    }


}

---

---

public class FractionTest {

        public static void main(String args[])
        {
            Fraction f = new Fraction();
            f.num = 50;
            f.den = 100;
            f.display();

            double d = f.dValue();
            System.out.println(d);
        }   
}

回答by yosh kemu

Simplifying fractions is easy if you can folow the steps:

如果您可以遵循以下步骤，则简化分数很容易：

1. find gcd of both num and den, so you have gcd=GCDFind(gcd, num);
2. now, if gcd==1, then the fraction cannot be simplified (it is already in simplified form).
3. if gcd > 1, then newNum = num/gcd; and newDen = den/gcd;

1. 找到 num 和 den 的 gcd，所以你有 gcd=GCDFind(gcd, num);
2. 现在，如果 gcd==1，那么分数不能被简化（它已经是简化形式了）。
3. 如果 gcd > 1，则 newNum = num/gcd；和 newDen = den/gcd;

It's all you need I think.

我想这就是你所需要的。

The gcd stands for Greates Common Divisor... Code easily findable, and I just googled JavaScript implentation working this way in few seconds: http://www.calculla.com/en/fraction

gcd 代表 Greates Common Divisor ......代码很容易找到，我只是在几秒钟内用谷歌搜索了 JavaScript 实现：http: //www.calculla.com/en/fraction

回答by DaMainBoss

You could have a look at these links, they can be helpful

你可以看看这些链接，它们会有所帮助

1. http://www.daniweb.com/software-development/java/threads/13663
2. http://www.dreamincode.net/forums/topic/64342-reducing-a-fraction/
3. simplifying fractions in Java

1. http://www.daniweb.com/software-development/java/threads/13663
2. http://www.dreamincode.net/forums/topic/64342-reducing-a-fraction/
3. Java 中的分数化简

and many more..

还有很多..