Interview Question Frequency Checker
Paste a question title or phrase. Instantly see how often it appears in 23,721+ real candidate reports, which companies asked it, and across which years.
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How the frequency checker works
This tool searches LeakCode's database of 23,721+ real interview questions using full-text indexing. Type a LeetCode problem title like "merge intervals" or a descriptive phrase like "find the kth largest element" and the engine will return every matching question in the database, along with the company that asked it, the year it was reported, and the difficulty the candidate assigned.
The search is fuzzy-tolerant: it handles partial titles, alternate phrasings, and paraphrases. If a question has been reported 12 times across Google, Amazon, and Bloomberg, you'll see all 12 in the results table alongside the company that asked each variant. This lets you quickly answer the most important prep question: is this problem worth my time?
How to use frequency data in your prep
A question with 20+ matches across multiple recent years is a tier-1 study target. It keeps appearing because it tests a core concept that companies genuinely care about — think two pointers, monotonic stacks, or sliding window. Lock in the pattern, not just the answer.
A question with 2 matches in 2021 and nothing since is worth deprioritizing. Hiring cycles change, interviewers rotate, and some problems go "stale" after wide exposure on forums like LeetCode and Blind. Recency matters as much as raw count.
Use the company breakdown at the top of results to understand whether a problem is broad (asked by 10+ companies) or company-specific (asked only by Google). Broad problems belong on every candidate's list. Company-specific problems are high-priority only if you're targeting that company.
Frequently asked questions
How does the frequency checker work?
The tool runs a full-text search against LeakCode's database using FTS5 indexing for fast phrase matching, with a LIKE fallback for partial matches. Results are ranked by relevance and show company, year, and difficulty for each match.
What should I search for?
Paste the LeetCode title (e.g. "two sum", "LRU cache"), a short problem description, or a key phrase from the problem statement. Shorter, distinctive phrases produce better results than long paragraphs.
Does this cover 2026 interview rounds?
Yes. The database is updated continuously with new candidate reports. The year field on each result shows when the interview was reported, so you can see recency at a glance.
Can I see full question text and solutions?
The preview shown here includes title, company, year, and a short excerpt. Full content — including the complete problem statement, candidate solutions, and discussion — is available with a LeakCode subscription. See pricing for details.