Toolliyo Academy

Coding Practice

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

Problems explorer DSA Interview 150 Company DSA All 150 problems Interview roadmaps Leaderboard Contests Interview Q&A MCQ exams
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Weekly Coding Sprint — Sep 21 — 4 problems

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Daily challenge · Mon, 21 Sept, 2026

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Hard · Wix DSA · 0 solved today · +15 pts

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Interview roadmap

DSA Interview 150

0 of 150 solved · 0%

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8773 problems across 12 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…

1615 problems · 18 categories

Company-wise DSA

Company-tagged DSA interview problems — Google, Amazon, Adobe, TCS, and more.…

2100 problems · 66 categories

DSA (Data Structures & Algorithms)

Classic DSA interview patterns in C# — arrays, two pointers, trees, graphs, DP, sorting, and hashing…

1050 problems · 10 categories

DSA Interview 150

Curated 150-problem DSA interview sheet — arrays through bit manipulation, with C# stdin/stdout solu…

150 problems · 18 categories

JavaScript

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

483 problems · 9 categories

MongoDB

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

259 problems · 5 categories

MySQL

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

459 problems · 9 categories

Node.js

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

408 problems · 8 categories

PostgreSQL

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

459 problems · 9 categories

React

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

416 problems · 8 categories

SQL

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

364 problems · 7 categories

SQL Server (T-SQL)

Microsoft SQL Server interview SQL — SELECT, JOINs, CTEs, window functions, indexes, and T-SQL patte…

1010 problems · 10 categories

How to use this hub

  1. Start a curated interview roadmap (ordered DSA sheets) or browse by track.
  2. Read the problem statement and try writing code in the starter editor.
  3. Run sample tests, then Submit for full auto-grading.
  4. Reveal the official solution and read the explanation before your next interview.
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