JAVA计算比值

JAVA计算比值、百分比

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

    public String getFs(int a, int b){  // 设置分子和分母
        if(a == 0 || b == 0){
            numerator = a;
            denominator = b;
        }else{
            int c = f(Math.abs(a),Math.abs(b));         // 计算最大公约数
            numerator = a / c;
            denominator = b / c;
            if(numerator<0 && denominator<0){
                numerator = - numerator;
                denominator = - denominator;
            }
        }
        return numerator + ":" + denominator;
    }

    int f(int a,int b){  // 求a和b的最大公约数
        if(a < b){
            int c = a;
            a = b;
            b = c;
        }
        int r = a % b;
        while(r != 0){
            a = b;
            b = r;;
            r = a % b;
        }
        return b;
    }

    public static void main(String[] args) {
        Fraction a = new Fraction();
        System.out.println("a:"+a.getFs(50,10));
    }
}