简化Java中的分数 [英] simplifying fractions in Java

问题描述

我的任务是发展理性课程。如果500和1000是我的输入，则（½）必须是我的输出。
我自己编写了一个程序来找到它。

My task is to develop a rational class. If 500 and 1000 are my inputs, then (½) must be my output. I have written a program on my own to find it.

还有另一种找到解决方案的最佳方法，或者我的程序已经是最好的了吗？

Is there another best way to find the solution, or my program is already the best one?

public class Rational {

    public static void main(String[] args){

       int n1 = Integer.parseInt(args[0]);
       int n2 = Integer.parseInt(args[1]); 
       int temp1 = n1;
       int temp2 = n2; 

       while (n1 != n2){
         if(n1 > n2)
            n1 = n1 - n2;
         else
            n2 = n2 - n1;
       }      

      int n3 = temp1 / n1 ;
      int n4 = temp2 / n1 ;

      System.out.print("\n Output :\n");

      System.out.print(n3 + "/" + n4 + "\n\n" );
      System.exit(0);
    }  
}

推荐答案

有趣题。这里有一些可执行代码只需几行：

Interesting question. Here's some executable code that does it in just a couple of lines:

/** @return the greatest common denominator */
public static long gcm(long a, long b) {
    return b == 0 ? a : gcm(b, a % b); // Not bad for one line of code :)
}

public static String asFraction(long a, long b) {
    long gcm = gcm(a, b);
    return (a / gcm) + "/" + (b / gcm);
}

public static void main(String[] args) {
    System.out.println(asFraction(500, 1000)); //  "1/2"
    System.out.println(asFraction(17, 3));     //  "17/3"
    System.out.println(asFraction(462, 1071)); //  "22/51"
}

这篇关于简化Java中的分数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！