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Built by students, for students — practice company-specific OAs, DSA sheets, and real interview experiences to land your dream role.

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Practice company-specific questions trusted by thousands of students across India.

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OA Practice·DSA·Placements

Disclaimer: OAHelper is an independent educational platform. We (oahelper.in) do not own the images or questions shown. Content is uploaded by users.

Topic Difficulty

Hard Recursion OA Questions

Practice 25+ hard Recursion coding questions from real online assessments. Filter by company, solve in the OAHelper editor, and prepare for company-wise OAs.

All Recursion easy medium

Hamilton pathhummingbirdHard Minimum Transactions to Settle DebtsaristaHard Graph Challengejupiter moneyHard The Order of DivisorswalmartHard Find Position in Monotone Sequence

samsung

Hard

Evaluating Circuit ExpressionszscalerHard

Count Digit Oneamerican expressHard

Binary ManipulationoracleHard

Count Digit OneamexHard

The Castle CourtyardnxtwaveHard

Largest Magical StringnvidiaHard

Largest Magical Binary StringnvidiaHard

61. DSA: Fault Detection in Automotive FirmwareinfoedgeHard

Count Integers with Divisible Digit SumlinkedinHard

Minimize Process Execution TimeripplingHard

Minimum and Maximum Moves to Fill First ColumntrilogyHard

CryptarithmtrilogyHard

Bitwise Palindromic PathsurbanHard

Mystic Array OperationswalmartHard

Largest Good Binary Stringion groupHard

Largest Magical Binary Stringion groupHard

Optimize Server LoadnutanixHard

Transaction Simplificationgoldman sachsHard

Maximum Barbell Weightjpmorgan chaseHard

Binary String OperationsripplingHard

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Hard Recursion OA Questions | OAHelper