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Linked List Cycle — Floyds Tortoise and Hare
Detect a cycle in a linked list in O(1) space using Floyd's two-pointer tortoise and hare algorithm.
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Merge Two Sorted Lists — Dummy Head Merge
Merge two sorted linked lists into one sorted list using a dummy head node to simplify pointer management.
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Palindrome Linked List — Split, Reverse, Compare
Check if a linked list is a palindrome by finding the middle, reversing the second half, then comparing.
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Remove Duplicates from Sorted List — Single Pass
Remove duplicate nodes from a sorted linked list in O(n) with a single pointer walk.
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Delete Node in a Linked List — Copy Next Value
Delete a node given only access to that node by copying the next node value and skipping the next node.
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