[Solved] You are given a list of meeting time intervals with start and... Which algorithmic pattern is best suited to find the minimum number of conference rooms required to host all meetings without overlap? | Intervals

Intervals - Meeting Rooms II (Minimum Conference Rooms)

You are given a list of meeting time intervals with start and end times. Which algorithmic pattern is best suited to find the minimum number of conference rooms required to host all meetings without overlap?

ADynamic Programming to find the longest chain of non-overlapping intervals

BGreedy approach by always picking the earliest finishing meeting

CBacktracking to try all possible room assignments

DSweep Line / Event Processing by sorting start and end times separately

Step-by-Step Solution

Solution:

Step 1: Identify problem requirements
The problem asks for the minimum number of rooms needed to host all meetings without overlap, which requires tracking concurrent intervals.
Step 2: Recognize suitable pattern
Sweep Line processes start and end events separately to count overlaps efficiently, directly solving the resource allocation problem.
Final Answer:
Option D -> Option D
Quick Check:
Sweep Line is the canonical pattern for interval overlap counting [OK]

Quick Trick: Minimum rooms -> count overlaps via sweep line [OK]

Common Mistakes:

MISTAKES

Confusing with longest chain or scheduling maximum meetings

Trap Explanation:

PITFALL

Candidates often confuse interval scheduling (max non-overlapping) with resource allocation (overlaps).

Interviewer Note:

CONTEXT

Tests candidate's ability to recognize interval overlap patterns.

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Which algorithmic pattern is best suited to find the minimum number of conference rooms required to host all meetings without overlap?

Step 1: Identify problem requirements

Step 2: Recognize suitable pattern

Final Answer:

Quick Check:

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