<prompt> Kutokana na orodha kushikamana, kubadilishana kila mbili kingo za jirani na kurudi kichwa chake. Kwa mfano, kama orodha ya kuingia ni 1 - 2 - 3 - 4, pato lazima 2 - 1 - 4 - 3.  <response>: To swap every two adjacent nodes in a linked list, you can use the following algorithm:1. Create a dummy node and point it to the head of the original list.2. Traverse the list, swapping each pair of adjacent nodes.3. Update the dummy node to point to the new head of the modified list.4. Return the dummy nodes next node as the new head of the list.Heres the Python code to implement this algorithm:class ListNode: def __init__self, val0, nextNone: self.val val self.next nextdef swapPairshead: ListNode - ListNode: dummy ListNode0 dummy.next head prev dummy while prev.next and prev.next.next: first prev.next second first.next prev.next, second.next, first.next second, first, second.next prev first return dummy.nextThis code creates a ListNode class that represents a single node in the linked list. The swapPairs function takes in the head of the original list and returns the head of the modified list.The algorithm works by creating a dummy node that points to the head of the original list. It then uses a while loop to traverse the list, swapping each pair of adjacent nodes. The prev variable keeps track of the previous node so that it can update its next pointer after the swap.Once the while loop is done, the dummy nodes next pointer points to the new head of the modified list, so the function returns that node. 