Task 1.6: 4

1.6.4.java

import java.util.Scanner;

/**
 * Created by evjeny
 */
public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        double a = scanner.nextDouble(), b = scanner.nextDouble();
        if(a!=0) {
            double d = Math.abs(b/a);
            double min_d = d==0.0?0.0:-d;
            if (a > 0) {
                if (b <= 0) {
                    print("x<"+min_d+" or x>"+d);
                } else {
                    print("any x");
                }
            } else {
                if(b>=0) {
                    print(min_d+"<x<"+d);
                } else {
                    print("no such x");
                }
            }
        } else {
            if(b>0) print("any x");
            else print("no such x");
        }

    }
    private static void print(Object todo) {
        System.out.print(todo);
    }
}