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CSE / IT study hub

Code, data structures and placement prep.

Read a lesson, solve judged problems, then take a timed topic test. Everything below is live on the site today.

5of 5 subjects ready Switch to ECE hub

Data Structures and Algorithms

Arrays to graphs, with judged problems for every pattern.

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TutorialsData Structures & Algorithms track CoursesData Structures in C · 6 lessons, 3 freeAlgorithms and Complexity · 6 lessons, 3 freeDSA Interview Patterns · 6 lessons, 3 free Coding practice20 judged problems Timed testsData Structures & Algorithms — Core Concepts · 12 minRecursion & Iteration Tracing · 18 min, ProTime & Space Complexity Analysis · 15 minArrays & Strings — Algorithms and Complexities · 15 min, ProLinked Lists, Stacks & Queues · 15 min

Python, C++ and Java

The other languages the judge accepts.

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TutorialsPython trackC++ trackJava track CoursesC++ and STL Essentials · 6 lessons, 3 freeJava Fundamentals · 6 lessons, 3 freePython for Engineering Students · 6 lessons, 3 free Timed testsPython Basics — Predict the Output · 15 minC++ — References, Overloading & STL Basics · 15 min, ProPython — Lists, Dicts, Sets, Tuples & Slicing · 15 minPython — Functions, Comprehensions & Closures · 15 min, ProJava — Primitives, Strings, Arrays & Static · 15 min

Placement preparation

Aptitude, reasoning, verbal and full mock papers.

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CoursesAptitude for Placements · 6 lessons, 3 freeLogical Reasoning for Placements · 6 lessons, 3 free Timed testsFull Mock Test 1 — Aptitude, Reasoning, Verbal & Programming · 60 minQuantitative Aptitude — Percentages, Ratios & Interest · 15 minQuantitative Aptitude — Time, Work, Speed & Trains · 15 minLogical Reasoning — Series, Coding, Relations & Directions · 15 minVerbal Ability — Vocabulary, Grammar & Paragraph Sense · 15 min PlacementPlacement roadmapCompany guides