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Explore questions associated with Walmart. Review the source details, then use the workspace for code, notes, and diagrams.
25 questions in the library. A source association does not guarantee a future interview question.
Behavioral and leadership · Coding · Object-oriented design · System design
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Showing 1–25
URL frontier, politeness, deduplication at scale, distributed workers, failure and trap handling.
Companies: Walmart, Amazon, Anthropic, Atlassian +7
bloom-filters · deduplication · distributed-workers · dns
Last reported Oct 2026
Design a payment network system that processes credit card transactions between merchants and issuing banks at scale. The system should handle transaction routing, bank…
Companies: Walmart, Databricks, Nubank, Visa
Last reported Sep 2026
Design a payment system that processes transactions through an external payment service for approval/denial, holds approved amounts, and batches all transactions daily for…
Companies: Walmart, Adyen, Agoda, Amazon +5
Last reported Sep 2026
Companies: Walmart, Amazon, Anthropic, Canva +10
Last reported Sep 2026
Companies: Walmart, Amazon, Google, Meta +3
Last reported Sep 2026
Companies: Walmart, Amazon, Anduril, DoorDash +5
Last reported Sep 2026
Find the minimum-cost path from any cell in the first row to any cell in the last row of an m×n grid where you may…
Companies: Walmart
Last reported Sep 2026
Companies: Walmart, Capital One, Google, LinkedIn +4
Last reported Sep 2026
Async processing with durable queues, per-channel isolation, retries/DLQ, at-least-once + idempotency, outbox, priorities.
Companies: Walmart, Airbnb, Amazon, Autodesk +24
async-processing · idempotency · outbox-pattern · queues
Last reported Sep 2026
Given an integer array and k, return the k most frequent elements — the core challenge is to count element frequencies and extract the top-k…
Companies: Walmart, Amazon, Bloomberg, Google +9
Array · Bucket Sort · Counting · Divide and Conquer
Last reported Sep 2026
Design a backend system for a customer support platform that allows 10,000 agents to manage and resolve tickets submitted by millions of users via email…
Companies: Walmart, Airbnb, Asurion, Expedia +1
Last reported Aug 2026
For each price, compute the final cost as price minus the first subsequent price to its right that is <= it (or the same price…
Companies: Walmart, Uber
Array · Monotonic Stack · Stack
Last reported Aug 2026
Group the input strings into lists of anagrams — i.e., strings that contain the same multiset of letters — and return the groups in any…
Companies: Walmart, Amazon, Apple, Arize Ai +14
Array · Hash Table · Sorting · String
Last reported Aug 2026
Aggregate points for each distinct number (value * frequency), then choose a subset of values maximizing sum with the constraint that taking value x forbids…
Companies: Walmart, Walmart Labs
Array · Dynamic Programming · Hash Table
Last reported Jul 2026
Design a self-service kiosk system that allows users to browse options, place orders or requests, process payments, and receive confirmations or printed receipts.
Companies: Walmart
Last reported Jul 2026
The interviewer focused on a conflict that comes from different perspectives or ideas on how to execute a certain task.
Companies: Walmart, Adyen, Amazon, Capital One +18
Last reported Jul 2026
Given an integer array and a target value, find the element in the array that is closest to the target (minimum absolute difference). If two…
Companies: Walmart
Last reported Jul 2026
Given an array of integers and a target value K, find a contiguous subarray whose elements sum to K and return the subarray elements in…
Companies: Walmart, Atlassian
Last reported Jul 2026
Behavioral question exploring error handling and conflict resolution skills. Follow-up probes examine adaptability under different constraints such as hierarchy differences or…
Companies: Walmart, Monzo
Last reported Jun 2026
Design a system for a global fast food restaurant chain that manages location-based menus with different items and pricing, and displays visually appealing menus on…
Companies: Walmart, Google, Salesforce
Last reported Jun 2026
Given a Hangout chat log, find the top k contributors, and return the result in reverse order.
Companies: Walmart, Google
Last reported Jun 2026
Find the length of the shortest transformation sequence from beginWord to endWord where each step changes exactly one letter and every intermediate word must be…
Companies: Walmart, Amazon, Apple, Fan +5
Bidirectional Search · Breadth-First Search · Hash Table · String
Last reported May 2026
Design a parking lot management system using the coding language of your choice. The code is expected to be syntactically correct, although it will not…
Companies: Walmart, Amazon, Eightfold.Ai, Eightfoldai +2
Last reported Feb 2026
Design a news aggregation system like Google News that allows users to subscribe to different news sources, categories, and topics, then view a personalized real-time…
Companies: Walmart, Amazon, Atlassian, Google +6
Last reported Jun 2025
Design a comprehensive parking lot system that supports both direct parking management (vehicle entry/exit, space availability tracking, payment processing, violation…
Companies: Walmart, Amazon, Bill.Com, C3 Ai +1
Last reported Mar 2022