Which of the following problems CANNOT be solved using the Minimum Platforms (Train Stations) greedy pattern of counting overlapping intervals?

easy🔍 Pattern Recognition Q2 of Q15

Greedy Algorithms - Minimum Platforms (Train Stations)

AFinding the minimum number of meeting rooms required given start and end times of meetings

BSelecting the maximum number of non-overlapping intervals from a set of intervals

CDetermining the minimum number of platforms needed for trains arriving and departing at different times

DCalculating the maximum number of trains that can be scheduled without overlapping at a station

Step-by-Step Solution

Solution:

Step 1: Understand the difference between maximum overlap and maximum non-overlapping intervals
Minimum Platforms pattern counts maximum simultaneous intervals (overlaps), while maximum non-overlapping intervals is a scheduling optimization problem.
Step 2: Identify that maximum non-overlapping intervals requires interval scheduling greedy, not overlap counting
This problem is solved by sorting by finish time and selecting intervals greedily, not by counting overlaps.
Final Answer:
Option B -> Option B
Quick Check:
Maximum non-overlapping intervals ≠ minimum platforms problem [OK]

Quick Trick: Max non-overlapping intervals ≠ overlap counting [OK]

Common Mistakes:

MISTAKES

Trap Explanation:

PITFALL

Candidates often assume all interval problems reduce to counting overlaps, missing the scheduling selection distinction.

Interviewer Note:

CONTEXT

Master "Minimum Platforms (Train Stations)" in Greedy Algorithms

3 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More Greedy Algorithms Quizzes