All courses
AlgorithmsFeatured path

DSA Patterns

Master Data Structures & Algorithms from scratch using pattern-based learning, active recall, spaced revision and real problem-solving. One core pattern at a time: solve curated problems, document mistakes, build reusable templates, and become interview-ready.

All Levels
90 days
16 modules · 152 lessons
STACKSHADE / COURSE
Algorithms

DSA Patterns

LEARNER OUTCOMES

What you should be able to do

  • Recognize the 16 core patterns behind 90% of interview problems
  • Build reusable code templates you can reproduce from memory
  • Solve 150+ curated problems with documented mistake logs
  • Recall every pattern on demand using spaced revision
TOPIC FORMAT

Every topic has two modes

Read — deep article with diagrams, artifacts and retrieval.

Present — focused deck with notes, pointer, timer and fullscreen.

Review — spaced review queue with due dates and recall ratings.

Focus — Pomodoro sessions, daily goals and a persistent scratchpad.

Loading progress…

Read → predict → inspect → retrieve. Your progress stays on this device.

0%
Loading study desk…
STUDY LOOP

Designed around learning, not scrolling

Each topic now has the full loop: article, visual explanation, artifact, retrieval and a recordable presentation.

Retrieval

Recall before revealing. The attempt is part of the learning action.

Spacing

Return at increasing intervals instead of rereading everything immediately.

Generation

Predict the next state or answer before seeing the worked version.

Dual coding

Pair compact prose with diagrams, traces, tables and motion.

Feynman

Teach the idea back in plain language to expose missing links.

Interleaving

Contrast nearby problem types so recognition becomes more useful.

CURRICULUM

Pick a topic

Why pattern-based learning beats grinding
Video8 min
Set up your mistakes log + template notebook
Read10 min
Your spaced revision calendar (Day 1 / 3 / 7 / 21)
Read6 min
Big-O intuition builder: visualize growth rates
Interactive15 min
FEYNMAN PROMPT

Explain to a friend why solving 150 problems by pattern beats solving 500 randomly.

ACTIVE RECALL
Why do we learn DSA by patterns instead of by topics?

Because interview problems are designed to disguise a small set of underlying patterns. Recognizing the pattern triggers the template — topics don't.

What goes into a mistakes log?

The problem, the wrong approach you tried, WHY it failed, the trigger that should have pointed you to the right pattern, and the corrected template.

KEEP GOING

Another path next

View all