Problem $2$ Linked List: $(35$ pis$)$

Write a function, def convert$($list$1$: LinkedList$)$ LinkedList:

convert$()$ function accepts a linked list of strings, Reverse the order of every group of two elements $($NOT nodes$).$ If there ane odd number of elements, the last group is considered reversed.

Run this function with test case:

this function should return $\text{'}b{?}^{\text{'}}{a}^{\text{'}}\text{'}d\text{'}\text{'}c\text{'}\text{'}{e}^{\text{'}}.$

Run this function with test case:

Write a function, def find$($list$2$: DoublyLinkedList, $n$: int$)$ DoublyLinkedList:

insert$()$ function accepts a sorted doubly linked list of integers and an integer, $n.$ If $n$ is in the list, return the number elements that are greater than or equal to $n,$ and the number of elements that are less than $n.$ If $n$ is not in the list, return the original list.

Run this function with the test case:

list$2$: $1$larr$3$larr$4$larr$8$larr$9$larr$10,n=8$

This function should return $2,3.$