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Problem: Linked List Cycle IV

Medium
30 min
Explore how to implement a function that detects and removes cycles in a singly linked list using fast and slow pointers. Learn to modify the list in place to maintain the original order while eliminating loops, ensuring a clear and acyclic structure.

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 [0,104][0, 10^4].

  • 105-10^5 \leq Node.value 105\leq10^5

Problem
Ask
Submissions

Problem: Linked List Cycle IV

Medium
30 min
Explore how to implement a function that detects and removes cycles in a singly linked list using fast and slow pointers. Learn to modify the list in place to maintain the original order while eliminating loops, ensuring a clear and acyclic structure.

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 [0,104][0, 10^4].

  • 105-10^5 \leq Node.value 105\leq10^5