Data Structures & Algorithms (DSA) Practice

This repository contains my DSA practice solutions collected while solving problems from:

• GeeksforGeeks (GFG)
• LeetCode
• My DSA batch / course practice

Most solutions are written in C++, and wherever applicable I also practice in Python.

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Repository Structure (Topic-wise)

The code is organized by data structure / algorithm topic:

• Arrays/
  Common array problems and patterns (searching, permutations, rotations, etc.)

• BinarySearch/
  Binary search patterns and classic questions

• String/
  String fundamentals + pattern based problems

• Recursion/
  Basic to intermediate recursion practice

• BasicSortingAlgorithms/
  Fundamental sorting techniques

• AdvancedSortingAlgorithm/
  Advanced sorting / sorting-based patterns

• MultiDimensionalArray/
  2D/Matrix type questions

• Sets/ and Maps/
  STL-based practice, frequency maps, set usage, etc.

• BinaryTrees/ and BST/
  Tree traversals, BST operations, and standard questions

• Graph/
  Graph implementation + core algorithms (traversals, DSU, shortest path, MST, etc.)

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Arrays (What you’ll find)

Inside Arrays/ you’ll find folders for specific problem types, for example:

• LargestElement/
• SecondLargestElement/
• ReverseArray/
• RotateArray/
• Linear_Search/
• MergeSortedArray/
• NextPermutation/
• TrappingRainWater/
• specializedSortProblems/

These are mostly based on popular interview + competitive programming patterns.

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Graph (What you’ll find)

Graph/ contains implementations and standard graph algorithms/patterns like:

• Traversals (BFS/DFS)
• Connected Components
• Cycle Detection (Undirected)
• DSU (Disjoint Set Union / Union-Find)
• Shortest Path
• MST (Minimum Spanning Tree)
• Topological Sort
• Implementation/

There is also a small STL practice file:

• Graph/Built-InLinkedList_Practice.cpp

Tip: If you see any compiled binaries like .exe, it’s better to remove them from GitHub and add them to .gitignore.

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Languages Used

• C++ (primary)
• Python (whenever I practice the same question in Python as well)

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How to Use / Run

C++ (g++)

g++ filename.cpp -o app
./app

Python

python filename.py

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Goals

• Build strong fundamentals in DSA
• Practice frequently asked patterns from GFG / LeetCode
• Keep a clean, topic-wise archive of solutions for revision

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Notes

• Folder names reflect the problem/topic.
• Solutions may include multiple approaches as I improve over time.

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Contributing

This is a personal practice repository, but if you want to suggest improvements (better naming, removing binaries, adding problem links), feel free to open a PR.

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