Question

Java implement a methot to reverse the elements in a circularly linked list.

Answer 1

To reverse the elements in a circularly linked list in Java, you can implement a method using a class to represent a node and another class to represent the circularly linked list, and use the reversal algorithm by updating the next pointers.

Step-by-step explanation:

To reverse the elements in a circularly linked list in Java, you can implement a method as follows:

1. Create a class to represent a node in the circularly linked list. Each node should have a reference to the next node.
2. Create a class to represent the circularly linked list. This class should have a reference to the first node in the list.
3. In the reverse method, iterate through the list and reverse the order of the nodes by updating the next pointers.
4. Finally, update the first node reference in the circularly linked list class to point to the last node after the reversal.

Here is an example implementation:

public class Node {
int data;
Node next;
}

public class CircularLinkedList {
Node first;

public void reverse() {
if (first == null) {
return;
}

Node current = first;
Node previous = null;
Node next = null;

do {
next = current.next;
current.next = previous;
previous = current;
current = next;
} while (current != first);

first = previous;
}
}