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Citadel Coding Questions

Master 25 questions asked by top tech companiesGoogle LogoAmazon LogoMeta LogoNetflix LogoOpenAI Logo

SQL

FAANG SQL 50

The hardest SQL questions from FAANG companies

DatabaseSQLFAANG
DataEngineering

Data Engineering

Coding problems for data engineering interviews

Data EngineeringPythonInterview Prep
DSA

DSA 150

Must-know data structures and algorithms problems

AlgorithmsPythonInterview Prep
MLCoding

MLE Coding 75

Essential ML coding problems for MLE interviews

ML CodingNumpyInterview Prep
Numpy

Learn NumPy in 14 Days

Master NumPy fundamentals one problem per day

NumpyBasicsTutorial
Python

Learn Python in 14 Days

Master Python fundamentals one problem per day

PythonBasicsTutorial
SQL

Learn SQL in 21 Days

Master SQL fundamentals one problem per day

SQLDatabaseBasics
Meta

Meta SQL

Meta SQL interview drills

SQLMetaDatabase
Stats

Stats Superhero

Stats functions: probability teasers, simulations

BeginnerStatsFAANG 50
Numpy

ML Ninja

ML functions: data cleaning, algorithms, evaluations

BeginnerNumpyFAANG 50
Pandas

Pandas Pro

Pandas fundamentals: Filters, Joins, and Row Transforms

BeginnerPandasFAANG 50

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