Circular Linked List
The last node points back to the first node, forming a circle. There is no NULL at the end.
Empty Circular List
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See the Logic in Motion
Stop memorizing code. Unlock the full interactive visualizer to master the logic step-by-step.Intuition
Think of a board game like Monopoly. The spaces form a loop; after the last space, you go back to the start. There is no "end".
Concept
A Circular Linked List is a variation where the last node points back to the first node instead of NULL.
How it Works
- No Null: Every node has a successor.
- Traversal: Be careful! An infinite loop occurs if you don't stop when you reach the start again.
Step-by-Step Breakdown
Insert at Tail:
- Create new node.
- Set new node's
nextto Head. - Find current Tail (node pointing to Head).
- Update Tail's
nextto new node.
When to Use
- Round Robin Scheduling: CPU scheduling where processes are given time slots in a circle.
- Multi-player Games: Turns pass from player to player in a loop.
When NOT to Use
- Simple Lists: If you don't need the circular property, it adds complexity.
- Infinite Loops: Risk of bugs if traversal condition is wrong.
How to Identify
Problems dealing with cycles or continuous loops where execution returns to the start.
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