intermediate

DSA Quiz Builder

Create a practical DSA project that combines lessons, examples and review questions into one useful workflow.

What you will build

Create a practical DSA project that combines lessons, examples and review questions into one useful workflow.

Why this project is useful

This project is useful because it turns isolated DSA concepts into a workflow that looks like real product work.

Real-world use case

A similar project can become a portfolio feature, an internal dashboard, a teaching demo or an interview talking point.

Features

  • Clear user goal
  • Small reusable pieces
  • Validation or review state
  • Copy or export friendly output

Tech stack

  • DSA

Folder structure

src/
src/components/
src/data/
README.md

Step-by-step build guide

  • Define the smallest useful version.
  • Build the core screen or command first.
  • Add sample data and edge cases.
  • Write a short README with run steps.

Code snippets

function uniqueValues(values) {
  const seen = new Set();
  return values.filter((value) => {
    if (seen.has(value)) return false;
    seen.add(value);
    return true;
  });
}

Final output

A working DSA project with a visible result, sample data and a clear next-improvement list.

Common errors

  • Building too many features before the first DSA result works.
  • Skipping empty-state or invalid-input testing.
  • Leaving setup notes out of the README.

Improvements

  • Add tests
  • Add saved progress
  • Improve empty states
  • Add deployment notes

Deployment guide

Use a static host for browser projects or a sandbox/server provider for backend examples.