Representative String Matching problems
Locate the first occurrence of a substring within a string using a two-pointer scanning strategy and invariant tracking efficiently.
Open problem page#214 Shortest PalindromeThe Shortest Palindrome problem asks to transform a string into a palindrome by adding characters at the beginning, with the shortest possible result.
Open problem page#459 Repeated Substring PatternCheck if a string can be constructed by repeating a substring using string matching techniques.
Open problem page#572 Subtree of Another TreeDetermine if one binary tree is an exact subtree of another by comparing structure and node values recursively.
Open problem page#686 Repeated String MatchFind the minimum number of repetitions of string a to make string b a substring of the repeated string a.
Open problem page#796 Rotate StringDetermine if one string can be rotated into another by repeatedly shifting characters, leveraging string matching techniques efficiently.
Open problem page#1023 Camelcase MatchingCamelcase Matching is a medium difficulty problem where you match queries to a given pattern by inserting lowercase letters.
Open problem page#1392 Longest Happy PrefixFind the longest non-empty prefix of a string that also appears as its suffix, optimizing with rolling hash techniques.
Open problem page#1397 Find All Good StringsFind all good strings between two given strings without including a specified evil substring using dynamic programming.
Open problem pageString Matching 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 String Matching Matters In Coding Interviews
Interviewers rarely care about the label alone. They care about whether you can recognize when the String Matching 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
- State transition dynamic programming
- Array plus String
- String plus String Matching
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 String Matching 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 String Matching 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 String Matching topic usually test in interviews?
String Matching 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 String Matching 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 String Matching group?
This topic page currently groups 33 indexed GhostInterview problem pages under the String Matching family.
Should I practice this topic before harder patterns?
That depends on your current gaps. If String Matching 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 String Matching 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 String Matching 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.