The optimal Time complexity to reverse a Linked List (Singly LL) is ______.radio_button_uncheckedO(n)radio_button_uncheckedO(1)     radio_button_uncheckedO(logn)            radio_button_uncheckedNone of these

What is the time complexity of deleting from the rear end of the dequeue implemented with a singly linked list?radio_button_uncheckedO(nlogn)radio_button_uncheckedO(logn)radio_button_uncheckedO(n)radio_button_uncheckedO(n2)

What is the time complexity of a program to reverse a linked list?*2 pointsO(n)O(1)O(n^2)None of the above

Reverse a Doubly Linked ListReverse a Doubly Linked ListConstraints:NAExample:Sample Input:3123Sample Output:List before reversal: 1 2 3 List after reversal: 3 2 1 Explanation:Input: 3 (Size), 1 2 3 (Initial elements)Output: List before reversal: 1 2 3Output: List after reversal: 3 2 1Public Test Cases:# INPUT EXPECTED OUTPUT1 3123List before reversal: 1 2 3 List after reversal: 3 2 1

What is the search complexity in direct addressing?radio_button_uncheckedO(n)radio_button_uncheckedO(1)radio_button_uncheckedO(n Log n)radio_button_uncheckedO(Log n)

Given a linked list of size N. The task is to reverse every k nodes (where k is an input to the function) in the linked list.Input FormatFirst line of input contains n- the size of first linked list. Next line of input contains n integers the n elements of the first linked list.Constraints1 <= N <= 10^41 <= k <= NOutput FormatPrint the modified linked list.Sample input81 2 2 4 5 6 7 84Sample output4 2 2 1 8 7 6 5