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Explore questions associated with Bloomberg. Review the source details, then use the workspace for code, notes, and diagrams.
129 questions in the library. A source association does not guarantee a future interview question.
Behavioral and leadership · Coding · Practical engineering · System design
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Given a DAG as adjacency lists, enumerate all possible paths from source node 0 to target node n−1 and return each path as a list…
Companies: Bloomberg
Last reported Oct 2026
Companies: Bloomberg, Carta, Hex
Last reported Oct 2026
Given a stream of stock trade notifications, each containing a ticker symbol and a volume, track the cumulative volume traded for each stock and efficiently…
Companies: Bloomberg
Last reported Oct 2026
Companies: Bloomberg
Last reported Oct 2026
Design a comment section for Bloomberg news articles that allows users to post comments, interact with them through likes and downvotes, and manage comment threads…
Companies: Bloomberg
Last reported Oct 2026
Design a Kanban-style project management board similar to Jira, including features like customizable status columns, ticket management, and drag-and-drop reordering of both…
Companies: Bloomberg, Justworks
Last reported Sep 2026
Given a string of well-formed nested brackets and characters, return all substrings or characters enclosed within the innermost nested brackets. Note that there may be…
Companies: Bloomberg
Last reported Sep 2026
Companies: Bloomberg, Buildops, Capital One, Lockheed Martin +2
Last reported Sep 2026
Given a string of lowercase letters and parentheses, remove the minimum number of '(' or ')' characters so the remaining string is a valid parentheses…
Companies: Bloomberg, Meta, Microsoft
Last reported Sep 2026
Given a black-box API hasShips(topRight, bottomLeft) that returns whether at least one ship (point at integer coordinates) lies inside an axis-aligned rectangle, compute the…
Companies: Bloomberg
Last reported Sep 2026
Given a bitonic array (an array that first increases then decreases), implement an efficient algorithm to search for a target element. Handle variations such as…
Companies: Bloomberg
Last reported Sep 2026
Companies: Bloomberg, Confluent, Google, LinkedIn +9
Last reported Sep 2026
Companies: Bloomberg, Amazon, Anthropic
Last reported Sep 2026
Companies: Bloomberg, Confluent, eBay, GitHub +5
Last reported Sep 2026
Companies: Bloomberg, DoorDash, Revolut, Roblox
Last reported Sep 2026
Design a CCTV video surveillance system for a museum that allows operators to view live camera feeds in real-time and access historical footage from the…
Companies: Bloomberg
Last reported Sep 2026
Review the implementation of methods and tests for a garage management system. Evaluate code correctness, test coverage, and overall design decisions.
Companies: Bloomberg
Last reported Sep 2026
Design a system that processes tweets from Twitter/X to identify and count stock ticker mentions, providing aggregated counts across different time windows (5, 10, 30…
Companies: Bloomberg
Last reported Sep 2026
Design a real-time commenting system that allows users to view and post comments instantly while watching live videos or browsing posts across Meta platforms. The…
Companies: Bloomberg, Amazon, Figma, Google +3
Last reported Sep 2026
Given pairwise variable ratios, build a weighted graph (or use union-find with multiplicative weights) where edges represent divisions, and answer each query by finding a…
Companies: Bloomberg, Amazon
Array · Bellman–Ford Algorithm · Breadth-First Search · Depth-First Search
Last reported Sep 2026
Given a list of transactions, mark any transaction invalid if its amount > 1000 or if there exists another transaction with the same name within…
Companies: Bloomberg
Last reported Sep 2026
Design a train reservation system that allows users to search for trains, book seats, and handle reservations with focus on low-level implementation details like booking…
Companies: Bloomberg
Last reported Aug 2026
Given a list of intervals, merge all overlapping (including touching endpoints) intervals and return the minimal set of non-overlapping intervals that cover them. Key pattern…
Companies: Bloomberg, Amazon, Antithesis, Apple +16
Array · Quicksort · Sorting
Last reported Aug 2026
Design a system that records passenger check-ins and check-outs and returns the average direct travel time between two stations. The core challenge is maintaining active…
Companies: Bloomberg, Apple, Axon, Ramp
Last reported Aug 2026
Given a string s and a word dictionary, return all possible sentences formed by inserting spaces so every token is a dictionary word — i.e.…
Companies: Bloomberg, Meta, ServiceNow
Array · Backtracking · Dynamic Programming · Hash Table
Last reported Aug 2026