Learning Roadmap

This section provides a structured 90-day journey to master Data Structures and Algorithms.

90-Day DSA Learning Roadmap

This roadmap provides a structured approach to learning Data Structures and Algorithms over a 90-day period.

Phase 1: Foundation (Days 1-2)

Tip
  • Master your chosen programming language (Python/C++/Java)
  • Learn fundamental programming constructs
  • Understand complexity analysis for better optimization
  • Practice memory management techniques
  • Build strong debugging skills

Phase 2: Recursive Thinking (Days 3-10)

Tip
  • Master recursive problem decomposition
  • Implement backtracking solutions
  • Practice tree-based recursive problems
  • Learn state management in recursion
  • Understand recursive stack behavior

Phase 3: Linear Data Structures (Days 11-25)

Tip
  • Implement and master array operations
  • Understand linked list variations
  • Practice stack-based problem solving
  • Master queue implementations
  • Begin participating in coding contests
  • Focus on implementation speed and accuracy

Phase 4: Core Algorithms (Days 26-40)

Tip
  • Master binary search variations
  • Implement common sorting algorithms
  • Practice sliding window techniques
  • Learn hash map implementations
  • Understand tree traversals
  • Master heap operations and applications
  • Focus on optimization techniques

Phase 5: Advanced Algorithms (Days 41-65)

Tip
  • Implement graph traversal algorithms
  • Master shortest path techniques
  • Practice dynamic programming patterns
  • Learn memoization strategies
  • Implement tabulation solutions
  • Focus on space-time trade-offs
  • Practice real interview problems

Phase 6: Expert Topics (Days 66-90)

Tip
  • Study number theory applications
  • Master bit manipulation techniques
  • Solve complex recursive problems
  • Participate in competitive programming
  • Focus on interview preparation
  • Practice system design concepts

Learning Strategy

  1. Daily Practice

    • Solve at least 2-3 problems daily
    • Implement each data structure from scratch
    • Focus on clean, efficient code

  2. Contest Participation

    • Join weekly coding contests
    • Practice time management
    • Learn from editorial solutions

  3. Review and Revision

    • Maintain a problem-solving journal
    • Review difficult problems weekly
    • Practice previously solved problems

Remember: Consistency is key. Focus on understanding concepts deeply rather than rushing through problems.

Note

Special thanks to Karan Saxena.