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Phase 20 · Data Structures & Algorithms

Topics

Arrays & Strings

Part of the AI Engineer Roadmap.

Summary

The most fundamental data structures — the majority of coding interview problems, including many ML-adjacent ones, reduce to array/string manipulation.

How to Learn This

  • 1Practice two-pointer and prefix-sum patterns on array problems.
  • 2Solve string-manipulation problems (substrings, palindromes, anagrams).
  • 3Aim for clean, bug-free code on easy problems before moving to medium difficulty.

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Choosing Between Fine-Tuning and RAG

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HashMap

More topics in Data Structures & Algorithms

HashMapTrees & GraphsDynamic ProgrammingRecursion & BacktrackingSorting & SearchingSliding WindowHeaps
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