06. Find Evens or Odds

package Lekciq;

import java.util.Scanner;
import java.util.function.IntPredicate;
import java.util.stream.IntStream;

public class FindEvensOrOdds {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);


        // Read lower and upper bounds
        int lowerBound = scanner.nextInt();
        int upperBound = scanner.nextInt();
        scanner.nextLine(); // Consume newline

        // Read command
        String command = scanner.nextLine();

        // Define predicate based on command
        IntPredicate predicate;
        if (command.equals("even")) {
            predicate = number -> number % 2 == 0;
        } else if (command.equals("odd")) {
            predicate = number -> number % 2 != 0;
        } else {
            throw new IllegalArgumentException("Invalid command: " + command);
        }

        // List numbers in the range based on the predicate
        listNumbers(lowerBound, upperBound, predicate);
    }

    // Method to list numbers in the range based on the predicate
    private static void listNumbers(int lowerBound, int upperBound, IntPredicate predicate) {
        IntStream.rangeClosed(lowerBound, upperBound)
                .filter(predicate)
                .forEach(num -> System.out.print(num + " "));
    }
}