What are you trying to solve?

DSA Atlas connects problem clues to patterns, patterns to data structures and algorithms, and every algorithm to a step-by-step visualization, complexity analysis, code, and practice.

Try:
Explore Data Structures
Arrays to B+ trees: operations, complexity, trade-offs.
Explore Algorithms
Searching, sorting, graphs, DP, strings, bits, math.
Find the Right Algorithm
Answer a few questions and get a recommendation with reasons.
Visualize an Algorithm
Step through execution with pseudocode and live state.
Follow the DSA Roadmap
Where to start for data structures and for algorithms, and what each stage needs first.
Practice Pattern Recognition
Read a problem, guess the pattern, see the clues you missed.

How the pieces connect

Every page links forward and backward along this chain, so you always know why an algorithm is the right one, not just how it works.

  1. Problem
    "I need the shortest route"
    →
  2. Pattern
    Graph · weighted · non-negative
    →
  3. Data structure
    Priority queue / heap
    →
  4. Algorithm
    Dijkstra
    →
  5. Complexity
    O((V + E) log V)
    →
  6. Implementation
    Python · TS · Java · C++ · Go
50
data structures
119
algorithms
122
interactive visualizers
109
practice problems · 26 patterns