目录
代码
package timberman.ui;
import java.util.Scanner;
public class homework {
public static void main(String[] args) {
Scanner input =new Scanner(System.in);
int []first_num=new int [2];
int []second_num=new int [2];
System.out.println("请输入第一个数字的分子");
first_num[0]= input.nextInt();
System.out.println("请输入第一个数字的分母");
first_num[1]= input.nextInt();
System.out.println("请输入第二个数字的分子");
second_num[0]= input.nextInt();
System.out.println("请输入第二个数字的分母");
second_num[1]= input.nextInt();
long temp_mother=(first_num[1]*second_num[1])/gcd(first_num[1],second_num[1]);
long temp_son=first_num[0]*(temp_mother/first_num[1])-second_num[0]*(temp_mother/second_num[1]);
long real_gcd=gcd(temp_son,temp_mother);
long real_son=temp_son/real_gcd;
long real_mother=temp_mother/real_gcd;
if(real_son%real_mother==0){
System.out.println(real_son/real_mother);
}
else{
System.out.println(real_son+"/"+real_mother);
}
}
public static long gcd(long a,long b) {
while(b!=0){
long temp=a%b;
a=b;
b=temp;
}
return a;
}
}