For Cracking Jobs and Doing DSA Confidently
1. Build Logic Before DSA
Before writing any code, clearly understand the input, output, constraints, and approach. Write the logic in
simple English first, then convert it into code.
2. Master One Programming Language Deeply
Choose one language such as JavaScript or Python and become comfortable with loops, conditionals,
arrays, strings, objects, and basic recursion.
3. Use Mental Models for Every Problem
Ask whether the problem can be solved using brute force, optimization, extra memory, or known patterns.
This builds structured problem-solving ability.
4. Learn DSA Through Patterns
- Arrays and Strings
- Two Pointers
- Sliding Window
- Hashing
- Recursion
- Binary Search
- Stack and Queue
- Linked List
- Trees
- Graphs
- Dynamic Programming
5. Write Code and Dry Run Every Solution
Always dry run your code step by step using pen and paper. Track variable changes and explain the flow
clearly.
6. Teach What You Learn
Explaining concepts and solutions improves clarity and long-term retention. If you can explain it, you truly
understand it.
7. Time and Space Complexity
Analyze time and space complexity for every solution. This habit is critical for interviews.
8. Combine DSA With Real Projects
Apply DSA concepts in real-world features like search, pagination, sorting, caching, and filtering.
9. Simple 90-Day Preparation Plan
1 Days 1-30: Basics, arrays, strings, two problems per day
2 Days 31-60: Pattern-based problems with time limits
3 Days 61-90: Trees, basic dynamic programming, mock interviews
10. Interview Mindset
Focus on explaining your approach clearly. Interviewers value structured thinking more than speed.
Final Note
Logic building is a skill developed through disciplined practice and structured thinking, not memorization.
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