HackerEarth

Exclusive SQL Tutorial on Data Analysis in R

Learn how to use SQL for powerful data analysis in R. This beginner-friendly tutorial covers queries, joins, filtering, and insights using real datasets.

Manish Saraswat

December 28, 2016

Developer Insights

Tower of Hanoi Recursion: Algorithm, Code & Complexity

Step-by-step Tower of Hanoi recursion algorithm with C++, Python, and C code. Covers the 2^N−1 move proof, O(2^N) complexity, and interview rubric tips.

Arpit Mishra

December 26, 2016

Developer Insights

Winning the HackerEarth Machine Learning challenge

Discover proven strategies to win HackerEarth’s Machine Learning challenges. Learn tips on feature engineering, model tuning, and real-world problem-solving.

Phani Srikanth

December 21, 2016

Developer Insights

Descriptive statistics with Python-NumPy

Explore descriptive statistics with Python and NumPy. Learn how to analyze and summarize data using key statistical measures like mean, median, variance, and standard deviation.

Rashmi Jain

December 19, 2016

Developer Insights

14 Women Who Shaped Data Science and Analytics

Meet 14 women who built the algorithms and institutions defining data science — from co-inventing Random Forests to founding Coursera and leading research at Google.

Dhanya Menon

December 16, 2016

Developer Insights

Practical Tutorial on Random Forest and Parameter Tuning in R

This tutorial on random forest explains how bagging, decision trees, random forest works and parameter tuning techniques in R using MLR & data.table package

Manish Saraswat

December 14, 2016

Top Products

Discover powerful tools designed to streamline hiring, assess talent efficiently, and run seamless hackathons. Explore HackerEarth’s top products that help businesses innovate and grow.

Assessments

AI-driven advanced coding assessments

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OnScreen

Interview every candidate. Defend every decision.

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Hackathons

Engage global developers through innovation

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L & D

Tailored learning paths for continuous assessments

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Top Authors

Get to know the experts behind our content. From industry leaders to tech enthusiasts, our authors share valuable insights, trends, and expertise to keep you informed and inspired.

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Medha Bisht

Discover Medha’s crisp breakdowns on tech, writing, and the ideas that inspire her - shaped by books, anime, and everyday adventures.

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Nidhi Kala

Explore Nidhi Kala’s blogs for thoughtful breakdowns of tech hiring, development culture, and the softer skills that build stronger engineering teams.

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Kumari Trishya

Read Kumari Trishya for deeply reflective takes on automation, AI interviews, and what fair, inclusive hiring could look like in tomorrow’s workplace.

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