Union-Find vs DFS for Connectivity
Learn when to use each pattern and make the right choice in your coding interview.
Quick Answer
Use Union Find when the problem fits union-find pattern
Use Dfs when the problem fits dfs pattern
Side-by-Side Comparison
Union Find
Best For
Various algorithmic problems
Time
Varies
Space
Varies
Dfs
Best For
Various algorithmic problems
Time
Varies
Space
Varies
How to Decide
- Analyze the problem constraints
- Consider time/space trade-offs
- Look for pattern triggers
Practice Both Patterns
Build intuition to recognize which pattern fits. Practice with interactive MCQs in LeetEye.
Download LeetEye Free