Finding the Cycle Start Point is an advanced and very important application of the Slow and Fast Pointer pattern.
After detecting a cycle in a linked list, this technique helps identify the exact node where the loop begins.
The algorithm uses Floyd’s Cycle Detection method along with a mathematical relationship between pointer movements.
It solves the problem efficiently in **O(n)** time and **O(1)** extra space without modifying the linked list.
This concept is frequently asked in coding interviews and strengthens understanding of linked list traversal logic.
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