HackerRank interview questions

Showing 1–5 of 5 results

• Build A Purchase-Intent Prediction NotebookMedium

  Prepare for a machine learning take-home notebook that predicts purchase intent from session features and submits binary outcomes. The prompt focuses on data cleaning, missing values, categorical encoding, model pipelines, weighted F1, threshold tuning, and robust submissions.

  HackerRankMachine Learning EngineerMachine LearningOnline Assessment
• Count Good Subsequences With Equal Character FrequenciesMedium

  Practice a combinatorics coding problem that counts good subsequences where every selected character has the same frequency. The prompt targets frequency counting, combinations, modular arithmetic, and grouping subsequences by common selected count.

  HackerRankMachine Learning EngineerCoding & AlgorithmsOnline Assessment
• Debug React Sorting, Persistence, Routing, and AccessibilityMedium

  This problem tests your ability to identify and rectify common React anti-patterns, including state mutations, improper side-effect handling, and accessibility failures in a data-driven application.

  HackerRankSoftware EngineerSoftware Engineering FundamentalsOnline Assessment
• Design a URL ShortenerMedium

  This question assesses the ability to design a URL shortening service (like Bitly) focusing on scalability, distributed ID generation, and efficient data retrieval.

  HackerRankSoftware EngineerSystem DesignTechnical Screen
• Find Final Ball HolderMedium

  This problem tests your ability to optimize repeated state transitions by identifying cycles in a functional graph or using modular arithmetic to jump through large steps.

  HackerRankSoftware EngineerCoding & AlgorithmsTechnical Screen