Solution: Linked List Cycle IV
Understand how to detect the presence of cycles in singly linked lists and remove them while preserving node order. Explore the Floyd’s Cycle Detection algorithm using fast and slow pointers to identify the cycle’s start and restore the list to a linear structure efficiently with O(n) time and O(1) space complexity.
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Statement
Given the head of a singly linked list, implement a function to detect and remove any cycle present in the list. A cycle occurs when a node's next pointer links back to a previous node, forming a loop within the list.
The function must modify the linked list in place, ensuring it remains acyclic while preserving the original node order. If no cycle is found, return the linked list as is.
Constraints:
The number of nodes in the list is in the range
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