Intervals - Meeting Rooms II (Minimum Conference Rooms)
Examine the following buggy code for the Meeting Rooms II problem. Which line contains the subtle bug that can cause incorrect room count?
Examine the following buggy code for the Meeting Rooms II problem. Which line contains the subtle bug that can cause incorrect room count?
medium🐞 Bug Identification Q14 of Q15
Step-by-Step Solution
Step 1: Identify missing sorting.
Intervals must be sorted by start time before heap processing; missing this breaks heap logic.Step 2: Confirm other lines.
Empty check is present; condition >= is correct for allowing room reuse; pushing after popping is correct.Final Answer:
Option D -> Option DQuick Check:
Without sorting, heap logic fails to track earliest ending meeting [OK]
Quick Trick: Heap logic requires sorted intervals by start time [OK]
Common Mistakes:
MISTAKES- Confusing overlap condition with <=
- Forgetting to sort intervals
- Misordering heap push/pop
Trap Explanation:
PITFALL- Not sorting intervals looks plausible since code runs, but heap logic depends on sorted starts.
Interviewer Note:
CONTEXT- Checks if candidate can spot subtle but critical preprocessing steps.
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