import java.util.ArrayList;
import java.util.List;

public class EmployeeSearch {

    public List<Employee> findByDepartment(List<Employee> employees, String department) {
        // Department field not defined in Employee; returning empty for now.
        return new ArrayList<>();
    }

    public List<Employee> findByHireDateRange(List<Employee> employees, String startDate, String endDate) {
        // Hire date field not defined in Employee; returning empty for now.
        return new ArrayList<>();
    }

    public List<Employee> findBySalaryRange(List<Employee> employees, int minSalary, int maxSalary) {
        List<Employee> result = new ArrayList<>();
        for (Employee e : employees) {
            int sal = e.getSalary();
            if (sal >= minSalary && sal <= maxSalary) {
                result.add(e);
            }
        }
        return result;
    }
}