Math类简单练习

求区间整数个数

import java.util.Scanner;

import static java.lang.Math.abs;
import static java.lang.Math.ceil;

public class math {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        double s = sc.nextDouble();
        double c = sc.nextDouble();
        double d = sc.nextDouble();
        double e = sc.nextDouble();
        int a = 0;
        double b = ceil(s);
        double f = ceil(c);
        for (double i = b; i < f; i++) {
            if (abs(i) > d || abs(i) < e){
                System.out.println(i);
                a++;
            }
        }
        System.out.println(a);
    }
}