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Do a while loop to calculate the size of the linked list.
Determine the size of the first half and create a new linked list in its size.
Do not forget that this half itself should be circular!
Use the previous hints for the second half.
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Linked list manipulation problems are common in FAANG-style interviews. Variations involving circular lists, pointer adjustments, and two-pointer techniques are often used to test understanding of linked list fundamentals.
Two pointers help find the midpoint of the list in a single traversal. This avoids extra passes and ensures the list can be split efficiently while preserving the circular structure.
A circular singly linked list is the core data structure used in this problem. Efficient pointer manipulation is crucial to split the list while maintaining the circular connections in both halves.
The optimal approach uses the two-pointer technique with slow and fast pointers. By moving fast twice as quickly as slow, you can identify the midpoint of the circular list and then adjust pointers to form two circular halves.