[Hacktoberfest] Create C++ Algorithm Implementations Library

[gautamankoji]

Issue: We are building a dedicated folder for C++ algorithms. Your task is to implement any well-known DSA algorithm (e.g., Sorting, Searching, Graph Algorithms, Dynamic Programming techniques, etc.) in C++.
Requirements:

• The algorithm should be well-documented (with comments explaining important steps).
• Include time and space complexity analysis in a README.md inside the folder.
• Bonus points if you add example test cases with input/output in a separate folder named tests! Suggested Folders:
• /cpp/algorithms/sorting/quick_sort.cpp
• /cpp/algorithms/dynamic_programming/knapsack.cpp

• /cpp/algorithms/dynamic_programming/knapsack_tests/

  Contribute to building a one-stop DSA C++ library for learners!

[Priansh-master]

hey @gautamankoji please assign this issue to me