Representative Greedy problems
Find two vertical lines that can form a container with the most water in a given array of heights.
Open problem page#44 Wildcard MatchingImplement full wildcard pattern matching using '?' and '*' by applying state transition dynamic programming with careful handling of edge cases.
Open problem page#45 Jump Game IIJump Game II requires finding the minimum jumps to reach the end of an array using dynamic programming and greedy techniques.
Open problem page#55 Jump GameSolve the Jump Game problem using state transition dynamic programming to determine if you can reach the last index of the array.
Open problem page#122 Best Time to Buy and Sell Stock IIMaximize stock profit by using a greedy approach to buy and sell multiple times, with state transition dynamic programming.
Open problem page#134 Gas StationThe Gas Station problem requires finding the starting station index for a full circular trip with gas stations and costs.
Open problem page#135 CandyThe Candy problem is a greedy algorithm challenge where you need to minimize candy distribution while satisfying certain rating conditions.
Open problem page#179 Largest NumberThe problem asks to arrange integers to form the largest possible number, focusing on greedy algorithms and string handling.
Open problem page#316 Remove Duplicate LettersRemove duplicate letters from a string to produce the lexicographically smallest result using stack-based state management.
Open problem pageGreedy interview questions usually collapse into a small set of repeatable moves. This page groups those GhostInterview problem pages together so you can stay inside one pattern family, compare representative questions, and practice explanations that transfer across multiple prompts. If you are trying to sharpen one interview weakness instead of browsing the entire library, start here.
Why Greedy Matters In Coding Interviews
Interviewers rarely care about the label alone. They care about whether you can recognize when the Greedy pattern applies, explain why it applies, and avoid the failure modes that usually show up under time pressure. That is why this page focuses on the family of problems rather than a single isolated example.
Pattern families that show up here
- Greedy choice plus invariant validation
- State transition dynamic programming
- Array scanning plus hash lookup
Use this page to narrow the session
Start from this topic hub, choose one or two representative problems, and then open the detailed problem pages only after you know which version of the pattern you want to reinforce.
How To Practice This Topic
The best workflow is to keep the prep block narrow. Pick one easy or medium problem to confirm the base pattern, then one medium or hard problem to test whether the explanation still holds when the constraints tighten. Once the logic is stable, move into GhostInterview to rehearse the live explanation flow.
Focus on transfer, not title count
Solving more Greedy titles is less useful than understanding how the same move changes across examples. Try to describe what stays the same and what changes from one problem to the next.
Use the problem page when you want the exact breakdown
This topic hub is the discovery layer. The single-problem pages are where you get the answer-first summary, examples, constraints, approach, complexity, pitfalls, and solver CTA.
How GhostInterview Fits
GhostInterview works best after you know which pattern family you are inside. Use this page to choose the right Greedy problem, then use the solver to get the answer path, complexity framing, and follow-up support without switching into a generic study flow.
FAQ
What does the Greedy topic usually test in interviews?
Greedy questions usually test whether you can spot the underlying pattern quickly, explain the trade-offs, and move from intuition to implementation without losing clarity.
How should I use this Greedy topic page?
Use it as a pattern hub. Start with the representative problems on this page, compare the common approach, and then open the exact problem page when you want the full breakdown.
How many GhostInterview problem pages are in the Greedy group?
This topic page currently groups 377 indexed GhostInterview problem pages under the Greedy family.
Should I practice this topic before harder patterns?
That depends on your current gaps. If Greedy is already a weak spot in interviews, it is usually better to stabilize it first before moving into more advanced or less frequent patterns.
Where does GhostInterview fit once I pick a Greedy problem?
The topic page narrows the pattern family. The problem page gives the exact breakdown. GhostInterview is the solver layer when you need direct help with execution, complexity, and follow-up handling.
Stay close to the same reasoning family
Need direct help once you choose a Greedy problem?
Use GhostInterview as the solver layer after you select the exact prompt. Capture the question, get the answer path and complexity framing, and keep the workflow inside the same topic family.
