Java将小数形式转换成分数形式

import java.util.Scanner;

public class ChangeToFenshuDemo {
	public static int getGongYueShu(int a, int b) {//求两个数的最大公约数
		int t = 0;
		if(a < b){
		t = a;
		a = b;
		b = t;
		}
		int c = a % b;
		if(c == 0){
			return b;
		}else{
			return getGongYueShu(b, c);
		}
	}

	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		System.out.println("input xiaoshu");
		String xiaoshu = in.next();

		String[] array = new String[2];
		array = xiaoshu.split("\\.");
		int a = Integer.parseInt(array[0]);//获取整数部分
		int b = Integer.parseInt(array[1]);//获取小数部分
		int length = array[1].length();
		int FenZi = (int) (a * Math.pow(10, length) + b);
		int FenMu = (int) Math.pow(10, length);
		int MaxYueShu = getGongYueShu(FenZi, FenMu);
		System.out.println(FenZi / MaxYueShu + "/" + FenMu / MaxYueShu);
	}

}

Java将小数形式转换成分数形式

原文：http://blog.csdn.net/happy_girl2012/article/details/46418261