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Amazon Interview Problems (104)

Problems reported from Amazon data science interviews

Status	Title	Difficulty	Language	Company	Topic
	Three Sum Pro	Medium	Python	Meta Amazon Adobe	arrays
	Top K Frequent Elements Pro	Medium	Python	Amazon Yelp Meta	data-structures
	Top N Per Group with ROW_NUMBER Pro	Medium	SQL	Amazon Airbnb Stripe	window-functions
	Total Spend Per Customer Pro	Medium	SQL	Amazon Stripe Shopify	joins
	Beta Distribution Applications Pro	Hard	Conceptual	Spotify Netflix Amazon	statistics
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	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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