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$ curl repovive.com/roadmaps/greedy-algorithms/activity-selection/comparing-the-three-problems

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$ curl repovive.com/roadmaps/greedy-algorithms/activity-selection/comparing-the-three-problems

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Comparing the Three Problems - Activity Selection | Greedy Algorithms | Repovive

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Greedy Algorithms8 sections · 317 units14h total

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Comparing the Three Problems

Same pattern, different questions

All three problems use the same core algorithm:

Problem	Question	Answer
Activity Selection	Max non-overlapping?	Count selected
Non-overlapping Intervals	Min to remove?	$n$ - count
Minimum Arrows	Min arrows?	Number of groups

The underlying technique is identical: sort by end time, greedily select non-overlapping. The answer is derived differently but This algorithm is the same. Recognize the pattern, not just the story.