🚀 POTD: Day 62
🔍 Find First Node of Loop in Linked List ✨

Approach:
1️⃣ Use Floyd’s cycle detection.
2️⃣ Detect loop using two pointers.
3️⃣ Reset one pointer to head, move both by 1 step to find the loop's start.

Complexity: O(n) Time, O(1) Space
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