MyLinkedList.java

public class MyLinkedList<E extends Comparable<E>> {
    private Node<E> head;

    public void append(E data) {
        Node<E> newNode = new Node<>(data);
        if (head == null) {
            head = newNode;
        } else {
            Node<E> current = head;
            while (current.next != null) {
                current = current.next;
            }
            current.next = newNode;
        }
    }

    public MyLinkedList<E> getFiltered(E threshold) {
        MyLinkedList<E> filteredList = new MyLinkedList<>();
        Node<E> current = head;
        while (current != null) {
            if (current.data.compareTo(threshold) > 0) {
                filteredList.append(current.data);
            }
            current = current.next;
        }
        return filteredList;
    }

    public E getMax() {
        if (head == null) return null;
        E max = head.data;
        Node<E> current = head.next;
        while (current != null) {
            if (current.data.compareTo(max) > 0) {
                max = current.data;
            }
            current = current.next;
        }
        return max;
    }

    public E getMin() {
        if (head == null) return null;
        E min = head.data;
        Node<E> current = head.next;
        while (current != null) {
            if (current.data.compareTo(min) < 0) {
                min = current.data;
            }
            current = current.next;
        }
        return min;
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder("[");
        Node<E> current = head;
        while (current != null) {
            sb.append(current.data);
            if (current.next != null) sb.append(", ");
            current = current.next;
        }
        sb.append("]");
        return sb.toString();
    }
}