【Java例题】2.2 分数类

矫情吗；* 2021-12-24 10:55 167阅读 0赞

2.定义分数类，包括分子和分母变量、构造方法、 加减乘除方法、化简方法、值计算方法和显示分子和分母的方法。 然后编写一个主类，在其主方法中通过定义两个分数对象来 显示每一个分数的分子值、分母值、化简和值， 显示两个分数加减乘除结果。

package chapter2;
    
    public class demo2 {
        public static void main(String[] args) {
            Fengshu f1=new Fengshu(12,18);
            Fengshu f2=new Fengshu(1,6);
            f1.show();
            f1.yuefeng();
            f1.show();
            Fengshu f3=Fengshu.jia(f1,f2);
            f3.show();
            f3=Fengshu.jian(f1,f2);
            f3.show();
            f3=Fengshu.cheng(f1,f2);
            f3.show();
            f3=Fengshu.chu(f1,f2);
            f3.show();
        }
    }
    
    class Fengshu {
        int a,b;
        public Fengshu(int a, int b) {
            this.a=a;
            this.b=b;
        }
        public void yuefeng() {
            int a1=this.a;
            int b1=this.b;
            while(b1 != 0){
                int temp = a1 % b1;
                a1 = b1;
                b1 = temp;
            }
            this.a=a/a1;
            this.b=b/a1;
        }
        public static Fengshu jia(Fengshu x,Fengshu y) {
            int ansa,ansb;
            ansa=x.a*y.b+x.b*y.a;
            ansb=x.b*y.b;
            Fengshu ans=new Fengshu(ansa,ansb);
            return ans;        
        }
        
        public static Fengshu jian(Fengshu x,Fengshu y) {
            int ansa,ansb;
            ansa=x.a*y.b-x.b*y.a;
            ansb=x.b*y.b;
            Fengshu ans=new Fengshu(ansa,ansb);
            return ans;        
        }
        
        public static Fengshu cheng(Fengshu x,Fengshu y) {
            int ansa,ansb;
            ansa=x.a*y.a;
            ansb=x.b*y.b;
            Fengshu ans=new Fengshu(ansa,ansb);
            return ans;        
        }
        
        public static Fengshu chu(Fengshu x,Fengshu y) {
            int ansa,ansb;
            ansa=x.a*y.b;
            ansb=x.b*y.a;
            Fengshu ans=new Fengshu(ansa,ansb);
            return ans;        
        }
        
        public void show() {
            System.out.println(a+"/"+b);
        }
    }

转载于:https://www.cnblogs.com/LPworld/p/10723811.html