Intervals - Minimum Interval to Include Each Query
Given the following partial output of the min-heap approach for queries [2,4,6]: res = [3, 2, -1], and intervals [[1,3],[2,5],[4,5]], which query corresponds to the result 2?
Given the following partial output of the min-heap approach for queries [2,4,6]: res = [3, 2, -1], and intervals [[1,3],[2,5],[4,5]], which query corresponds to the result 2?
hard🔄 Reverse Engineer Q9 of Q15
Step-by-Step Solution
Solution:
Step 1: Map results to queries
Result array corresponds to queries in order: res[0]=3 for query 2, res[1]=2 for query 4, res[2]=-1 for query 6.Step 2: Identify query with result 2
Result 2 is at index 1, corresponding to query 4.Final Answer:
Option A -> Option AQuick Check:
Indexing matches query order [OK]
Quick Trick: Result array index matches query order [OK]
Common Mistakes:
MISTAKES- Mixing up query indices after sorting
Trap Explanation:
PITFALL- Candidates confuse sorted queries with original indices, misassigning results.
Interviewer Note:
CONTEXT- Tests ability to reverse engineer output to input mapping
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