Company Focus

Amazon Interview Problems (99)

Problems reported from Amazon data science interviews

Status	Title	Difficulty	Language	Company	Topic
	Coin Change Minimum Pro	Hard	Python	Amazon Google Two Sigma	dynamic-programming
	Collaborative Filtering Cold Start Pro	Hard	Conceptual	Netflix Spotify Amazon	machine-learning
	Database Indexing with B-Trees Pro	Hard	Conceptual	Amazon Databricks	computer-science
	Date-Based Cohort Analysis Pro	Hard	SQL	Amazon Instacart Robinhood	date-functions
	Dealing with Data Quality Issues Pro	Hard	Conceptual	Stripe Amazon	culture-fit
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	Distributed Computing Challenges Pro	Hard	Conceptual	Google Amazon Stripe	big-data
	Generate Permutations Pro	Hard	Python	Google Amazon Two Sigma	recursion
	Hash Map from Scratch Pro	Hard	Python	Amazon Google Meta	data-structures
	Information Extraction Pipelines Pro	Hard	Conceptual	Bloomberg Amazon	nlp
	Kernel Density Estimation Pro	Hard	Conceptual	Google Amazon Microsoft	statistics
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	LAG and LEAD for Sequential Comparison Pro	Hard	SQL	Two Sigma Uber Amazon	window-functions
	Latest Order Per Customer Using Join and Subquery Pro	Hard	SQL	Amazon Stripe Airbnb	joins
	Merge K Sorted Lists Pro	Hard	Python	Google Amazon Uber	sorting
	Model Drift and Retraining Pro	Hard	Conceptual	Meta Amazon	practical-experience
	Model Serving: TorchServe and TF Serving Pro	Hard	Conceptual	Amazon Google Microsoft	deep-learning-libraries
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	Moving Average with Window Frame Pro	Hard	SQL	Amazon Two Sigma Uber	window-functions
	Orders Exceeding Customer Lifetime Average Pro	Hard	SQL	Amazon Stripe Shopify	subqueries
	PERCENT_RANK for Distribution Analysis Pro	Hard	SQL	Two Sigma Amazon Uber	window-functions
	Revenue Contribution by Region With Rollup Pro	Hard	SQL	Walmart Amazon Stripe	group-by
	Running Total Pro	Hard	SQL	Amazon Stripe	window-functions
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	Self Join: Employees Earning More Than Their Manager Pro	Hard	SQL	Google Meta Amazon	joins
	Spiral Matrix Traversal Pro	Hard	Python	Google Amazon Microsoft	arrays
	Top Earning Product in Each Category Using Subquery Pro	Hard	SQL	Amazon Walmart Uber	subqueries
	Top Spending Customer Per Product Category Pro	Hard	SQL	Amazon Netflix Spotify	joins

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