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Data Structures & Algorithms · Module 1 of 10

Why DSA matters

Data structures organise data; algorithms solve problems step by step.

📖 Key ideas

  1. A data structure stores and organises data (array, list, tree).
  2. An algorithm is a finite sequence of steps to solve a problem.
  3. Good choices make programs fast and memory-efficient.
  4. DSA is central to coding interviews and competitive programming.
  5. Practise on LeetCode, HackerRank, Codeforces, GeeksforGeeks.
💡 Real-life example: Data structures are kitchen containers; algorithms are recipes using them.
Data structureWay to organise data
AlgorithmStep-by-step procedure
EfficiencyTime and memory used
Problem solvingBreaking down tasks