AI tutor · Computer science

Learn to debug, not just to copy the fix

When your code breaks, the fastest fix teaches you nothing. SparkMentor reads your code, asks what you expected to happen, and leads you to the line where reality and expectation part ways, so you get better at finding the next bug yourself.

What you can bring

Type it, paste it or snap a photo. The tutor starts from where you are, including from your own wrong attempt.

  • Code that compiles but prints the wrong thing
  • Recursion you can't trace
  • Big-O questions
  • Data-structure choices: list, set, map or heap?
  • SQL queries and database basics
  • Board-exam programs in Java or Python

How a session goes

SparkMentor teaches the way a good private tutor does: it explains, then hands the next step back to you.

Example session

Student: My binary search loops forever when the target isn't in the list.

SparkMentor: Let's trace it. When low and high are next to each other, what do mid, low and high become after one more step?

Student: Oh. low = mid, so it never moves past mid.

SparkMentor: That's the bug. What should low become instead, so the search space always shrinks?

The tutor can then quiz you on off-by-one errors with a few short tracing questions.

  1. 01

    Debugging as a skill

    Instead of rewriting your code, the tutor helps you trace it, form a hypothesis and test it: the habit that makes the next bug quicker.

  2. 02

    Concepts behind the syntax

    Recursion, pointers, complexity and data structures are explained with small examples you can run and change.

  1. 03

    Your language

    Python, Java, C, C++, JavaScript and SQL, plus the Java and Python used in Indian board syllabi.

  2. 04

    Practice that targets gaps

    Quizzes on the exact ideas that tripped you up, from loop invariants to hash collisions.

Computer science topics covered

Programming

  • Variables, loops and functions
  • Object-oriented programming
  • Recursion
  • Debugging and testing

Data structures & algorithms

  • Arrays and linked lists
  • Stacks, queues and trees
  • Sorting and searching
  • Time and space complexity

Systems & data

  • SQL and databases
  • Boolean logic
  • Computer networks
  • Number systems

Preparing for an exam?

Build a day-by-day plan from the official syllabus, with this tutor for every chapter.

Features you'll use for computer science

Each one has its own page: how it works, what it costs.

Questions students ask

Will the AI tutor just fix my code?

Not by default. It helps you find the bug yourself by tracing the code and asking what you expected, because that's the skill that makes you faster next time. You can still ask it to show a corrected version once you understand the problem.

Which programming languages does it support?

Python, Java, C, C++, JavaScript and SQL among others, including the Java and Python used in CBSE, ICSE and ISC computer science.

Can it explain algorithms and Big-O?

Yes. It explains algorithms with small traced examples and walks through time and space complexity step by step.

Is it useful for school computer science exams?

Yes. Exam plans follow the official CBSE, ICSE and ISC computer science syllabi chapter by chapter.

Other subjects

Try the computer science tutor free

1,000 free credits to start, plus 300 every month. No credit card.

Start for free