Toolliyo Academy

Coding Practice

Interview-style programming exercises with starter code, solutions, and explanations—like Sanfoundry, aligned to our tutorial tracks.

Interview Q&A MCQ exams

2939 problems across 8 tracks — pick a language or stack to practice.

C# Programming

Basic to advanced C# programs—arrays, LINQ, delegates, OOP, threads, and interview-style exercises w…

1191 problems · 18 categories

JavaScript

JavaScript fundamentals, arrays, strings, async, ES6+, and common frontend interview coding tasks.…

303 problems · 9 categories

MongoDB

MongoDB queries, updates, aggregation pipeline, and indexing interview scenarios.…

159 problems · 5 categories

MySQL

MySQL SELECT, JOINs, aggregates, DDL, indexes, stored procedures, and JSON functions—interview SQL p…

279 problems · 9 categories

Node.js

Node.js modules, file system, HTTP, streams, events, and backend interview exercises.…

248 problems · 8 categories

PostgreSQL

PostgreSQL queries, CTEs, window functions, arrays, JSONB, and performance—advanced SQL interviews.…

279 problems · 9 categories

React

React components, hooks, state, props, lists, and patterns asked in frontend interviews.…

256 problems · 8 categories

SQL

SELECT, JOINs, aggregates, subqueries, DDL, and indexing—SQL exercises with sample schemas.…

224 problems · 7 categories

How to use this hub

  1. Read the problem statement and try writing code in the starter editor.
  2. Run your code (C#, JavaScript, SQL supported in the playground).
  3. Reveal the official solution and read the explanation before your next interview.
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