Unit 5 Session 2 (Click for link to problem statements)
Understand what the interviewer is asking for by using test cases and questions about the problem.
lst
is empty, the function should return None
since there would be no nodes to create.Plan the solution with appropriate visualizations and pseudocode.
General Idea: Convert an array of values into a linked list, starting with the first value as the head and linking subsequent values.
1) Check if the input list `lst` is empty and return `None` if true.
2) Create the head of the linked list with the first element of `lst`.
3) Traverse the remaining elements of `lst`, creating a new node for each and linking it to the list.
4) Return the head of the newly formed linked list.
⚠️ Common Mistakes
None
.def list_to_linked_list(lst):
if not lst: # Check if the array is empty
return None
head = Node(lst[0]) # Create the head node with the first element
current = head
for value in lst[1:]: # Iterate over the rest of the elements
current.next = Node(value) # Create a new node and link it
current = current.next
return head