Coding & Algorithms (DSA)
Greedy
6 practice questions. Free questions open a full answer guide; the rest unlock with Pro.
- How do you decide whether a problem can be solved greedily, and how would you convince yourself a greedy choice actually yields the optimum?
- When a problem could be solved by either a greedy approach or dynamic programming, how do you decide which to use, and what does choosing greedy buy you when it's actually valid?Go Pro
- For an activity-selection or interval-scheduling problem, why does sorting by earliest finish time give the optimal result, and what goes wrong if you sort by earliest start or shortest duration instead?Go Pro
- Suppose you have a list of meetings with start and end times and one room, and you want to schedule as many non-overlapping meetings as possible. How would you approach it greedily, and why does that choice work?Go Pro
- What is a greedy algorithm, and how do you know whether a greedy approach will actually give the optimal answer for a given problem?Go Pro
- How do you convince yourself that a greedy algorithm is actually correct rather than just plausible, and what's a concrete example where the obvious greedy choice quietly gives a suboptimal answer?Go Pro
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