Intervals - Insert Interval
Compare the brute force one-pass merge approach and the sorting + merge after insertion approach for inserting intervals. When is the brute force approach preferable?
Compare the brute force one-pass merge approach and the sorting + merge after insertion approach for inserting intervals. When is the brute force approach preferable?
hard⚖️ Approach Comparison Q8 of Q15
Step-by-Step Solution
Solution:
Step 1: Analyze brute force approach
Brute force one-pass merge works in O(n) if intervals are sorted and mostly non-overlapping.Step 2: Compare with sorting + merge
Sorting + merge is O(n log n), so brute force is better when input is already sorted and clean.Final Answer:
Option B -> Option BQuick Check:
Brute force is preferable for sorted, mostly non-overlapping intervals [OK]
Quick Trick: Brute force is O(n) if intervals are sorted and mostly disjoint [OK]
Common Mistakes:
MISTAKES- Assuming brute force always better or ignoring input order
Trap Explanation:
PITFALL- Candidates confuse brute force applicability ignoring input properties.
Interviewer Note:
CONTEXT- Tests tradeoff reasoning between approaches based on input characteristics.
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