🚀 AlgoCodes

This repository is a collection of algorithms, coding solutions, and problem-solving approaches across multiple languages, platforms, and problem categories.
It is designed as a collaborative space where contributors can add their solutions in a structured and organized hierarchy.

Problem Statement

Sliding Window

C++

longest-substring-without-repeating-characters

Python

Java

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Strings

C++

Python

Java

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Arrays

C++

Python

Java

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Maths

C++

Binary 2 Decimal Binary 2 Decimal using Buildin Function Binary 2 Octal Decinal 2 Binary

Python

Java

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Miscellaneous

C++

Majority Element

Python

Java

Flipping Bits Primality

PHP

Flipping Bits Primality

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Recursion

PHP

Fibonacci Number

Python

Java

Fibonacci Number

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Search

C++

Search in 2D Matrics

Python

Java

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C++

Python

Java

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C++

Python

Java

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C++

Python

Java

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C++

Python

Java

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C++

Python

Java

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C++

Python

Java

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📂 Repository Structure

All solutions must follow this folder hierarchy: language/platform/problem-type/problem/{files}

Examples

• cpp/leetcode/arrays/two-sum/john123_twoSum.cpp
• python/hackerrank/strings/valid-anagram/alex_validAnagram.py
• c/codeforces/dp/longest-increasing-subsequence/rahul_LIS.c

This ensures solutions are well organized and easily searchable.

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📝 Contribution Workflow

To contribute, please follow these steps:

1. Add your solution in the correct folder:
   • Language → Platform → Problem-Type → Problem
2. File naming convention: username_problemName.extension Example: alex_twoSum.cpp
3. Code requirements:

• Add a short description of the problem
• Mention your approach/logic
• Write clear comments

4. Update repository files:

• Add your name in CONTRIBUTORS.md if you’re new
• Update README.md with a relative path to your solution under the right problem section, marking it with a ✅ language tag

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📑 Problem Index

This index organizes problems by Platform → Problem Type → Problem, with solutions listed per language.
Contributors should add their solutions under the relevant problem.

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📌 LeetCode

🔹 Sliding Window

• Longest Substring Without Repeating Characters (./cpp/leetcode/sliding-window/longest-substring-without-repeating-characters)
• ✅ C++: longest-substring-without-repeating-characters
• ✅ Python: (add here)
• ✅ Java: (add here)

🔹 Arrays

• Two Sum (./cpp/leetcode/arrays/two-sum)
• ✅ C++: alex_twoSum.cpp
• ✅ Python: maria_twoSum.py

🔹 Strings

• Valid Anagram (./python/leetcode/strings/valid-anagram)
• ✅ Python: alex_validAnagram.py

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📌 HackerRank

🔹 Strings

• Pangrams (./cpp/hackerrank/strings/pangrams)
• ✅ C++: rahul_pangrams.cpp
• ✅ Python: Snigdhaaghosh_pangrams.py

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📌 Codeforces

🔹 Dynamic Programming

• Longest Increasing Subsequence (./c/codeforces/dp/longest-increasing-subsequence)
• ✅ C: rahul_LIS.c

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🙌 Contributors

See the full list in CONTRIBUTORS.md.
Your contributions make this project stronger 💡