What are the different cycle detection algorithms and how do they compare?
There are several cycle detection algorithms, including Depth-First Search (DFS), Floyd's Tortoise and Hare, and Union-Find. Each has its strengths and weaknesses depending on the graph structure.
Can you explain how the DFS algorithm works for cycle detection?
Sure! The DFS algorithm explores nodes and marks them as visited. If it encounters a visited node that is not the parent, a cycle is detected.
What about Floyd's Tortoise and Hare algorithm?
Floyd's algorithm uses two pointers moving at different speeds. If they meet, a cycle exists. It's efficient for linked lists.
Which algorithm is the most efficient for large graphs?
For large graphs, the Union-Find algorithm is often the most efficient due to its near-constant time complexity for union and find operations.
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