Intervals - Minimum Interval to Include Each Query
You have a list of intervals and a list of queries. For each query, you want to find the length of the smallest interval that includes it. Which algorithmic pattern best fits this problem?
You have a list of intervals and a list of queries. For each query, you want to find the length of the smallest interval that includes it. Which algorithmic pattern best fits this problem?
easy🔍 Pattern Recognition Q1 of Q15
Step-by-Step Solution
Solution:
Step 1: Identify problem requirements
The problem requires finding the smallest interval covering each query, which suggests processing queries offline and efficiently managing intervals.Step 2: Match pattern to approach
Sorting intervals and queries and using a min-heap to track active intervals is a classic pattern for minimum interval coverage queries.Final Answer:
Option B -> Option BQuick Check:
Offline sorting + min-heap is the standard pattern [OK]
Quick Trick: Offline sorting + min-heap fits minimal covering interval queries [OK]
Common Mistakes:
MISTAKES- Confusing with interval merging or DP patterns
Trap Explanation:
PITFALL- Candidates often pick DP or sliding window because intervals are involved, but those don't efficiently handle queries for minimal covering intervals.
Interviewer Note:
CONTEXT- Tests candidate's ability to recognize interval-query offline processing pattern
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