Method removeLoop

Gfg/Java/Delete_Loop_from_LL.java:123–139

(Node head)

class ans {
    public static void removeLoop(Node head) {
        if (head == null || head.next == null)
            return;

        Node slow = head, fast = head;

        // Search for loop using slow and fast pointers
        while (fast != null && fast.next != null) {
            slow = slow.next;
            fast = fast.next.next;

            if (slow == fast) {
                remove(head, fast, slow);
                break;
            }
        }
    }

    private static void remove(Node head, Node fast, Node slow) {
        if (slow == fast) {