Linked List Cycle II
Explore how to identify the starting node of a cycle within a linked list by applying an efficient algorithm. Understand key constraints and implement a solution that runs in linear time with constant space. This lesson tests and enhances your problem-solving skills for coding interviews.
We'll cover the following...
We'll cover the following...
Statement
Given the head of a linked list, return the node where the cycle begins. If there is no cycle, return null.
A cycle exists in a linked list if there is some node in the list that can be reached again by continuously following the next pointer. Internally, pos denotes the node’s index to which the tail’s next pointer is connected.
Constraints:
The number of the nodes in the list is in the range
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