Create Binary Tree From Linked List | Dataford Interview Questions

Create a binary tree from a given linked list.

The linked list stores level-order values, including None markers for missing nodes. Implement create_binary_tree(head) and return the root; the evaluator serializes the result in level order.

Example: [1, 2, 3, None, 4] produces [1, 2, 3, None, 4]. An empty list produces None.

Input tests encode the linked list as an array; the harness converts it to linked nodes.

Constraints

0 <= number of linked-list nodes <= 5000
The first value is either an integer or None
Each non-None value is an integer
None markers represent missing children and do not receive descendants
The linked list is already in level-order representation

Function Signature

def create_binary_tree(head):

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