Conversation history under a token budgetCodingFit a conversation history into a token budget for the next model call, keeping the most important messages and dropping or summarizing the rest. Reported on 1point3acres' Sierra…
Last asked Oct 2026
Sierra
Built around a take-home: a recruiter call, one coding screen, a take-home customer-support agent, then an in-person onsite with a debugging round, a presentation of your agent and a hiring manager conversation.
- Fetch all pages until an empty batchCodingPage through a batched API until it returns an empty batch, collecting every record without fetching forever on errors. Reported on 1point3acres' Sierra bank; reconstructed in our…Last asked Oct 2026
- Design a customer-service AI agent with tools and guardrailsAI systemYou built a small conversational agent with two tools for the take-home. Now design the real thing: a platform that runs AI agents for many consumer brands, over chat and voice…Last asked Aug 2026
- Split Markdown into chunks that keep their headersCodingSplit a Markdown file into chunks no larger than a size limit. When a new chunk starts in the middle of a section, it must begin with the headers that text sits under (for example…Last asked Apr 2026
- Print timed text intervals in order and flag overlaps and gapsCodingYou get a list of time intervals, each with a piece of text, and print them in time order, much like merge intervals. The follow-up asks you to report where two intervals overlap…Last asked Nov 2025
- Maximum element in an arrayCodingReturn the largest element of an array in one pass. Reported on 1point3acres' Sierra bank; reconstructed in our own words.
- Merge ordered streamsCodingMerge several ordered input streams into one ordered output without loading any stream fully into memory. Reported on 1point3acres' Sierra bank; reconstructed in our own words.
- Multiples streamCodingGenerate the infinite stream of multiples (or Hamming-like numbers) lazily, yielding values in order on demand. Reported on 1point3acres' Sierra bank; reconstructed in our own…
- Ordered integer streamCodingMaintain an integer stream that yields values in order as out-of-order inserts arrive. Reported on 1point3acres' Sierra bank; reconstructed in our own words.