# HackerRank Solutions — Bug Report & PR Description

[zwbproducts]

Date: 2026-01-28
Repo: https://github.com/zwbproducts/HackerRank-Solutions

Summary

This PR fixes repository-hygiene issues that made the repo awkward to use in shells and automation:

• Removes spaces from solution filenames (shell/CI-safe paths).
• Standardizes solution filenames to snake_case.
• Organizes solutions into language-based folders.
• Adds missing project documentation.

Problems found (and fixed)

1) Critical: filenames with spaces

Problem: Many source files used spaces in filenames (e.g., algo rotation.c).

Impact: Breaks common tooling and CI scripts unless everything is carefully quoted.

Fix: Renamed to snake_case with no spaces and moved under solutions/.

2) Missing docs

Problem: No README / contributing guidance / style guidance / changelog / code of conduct.

Fix: Added:

• README.md
• CONTRIBUTING.md
• CHANGELOG.md
• CODE_STYLE.md
• CODE_OF_CONDUCT.md
• solutions/README.md

3) Flat repo structure

Problem: All solution files were in the repository root.

Fix: Introduced:

• solutions/c/ (C)
• solutions/cpp/ (C++)

4) Extension/code mismatch

Problem: Several .c files were actually C++ (e.g., #include <iostream>).

Fix: Moved those to solutions/cpp/ and renamed them to .cpp.

File moves / renames

C:

• ceasar cipher.c → solutions/c/caesar_cipher.c

C++:

• algo rotation.c → solutions/cpp/algo_rotation.cpp
• Angryprofessor.c → solutions/cpp/angry_professor.cpp
• angry children.cpp → solutions/cpp/angry_children.cpp
• bus station.c → solutions/cpp/bus_station.cpp
• cavity map.c → solutions/cpp/cavity_map.cpp
• chocolate feast.c → solutions/cpp/chocolate_feast.cpp
• cut the sticks.c → solutions/cpp/cut_the_sticks.cpp
• find digits.c → solutions/cpp/find_digits.cpp
• find median.cpp → solutions/cpp/find_median.cpp
• flowers.cpp → solutions/cpp/flowers.cpp
• grid search.c → solutions/cpp/grid_search.cpp
• k candy store.c → solutions/cpp/k_candy_store.cpp
• manasa and stones.c → solutions/cpp/manasa_and_stones.cpp
• minimum draws.cpp → solutions/cpp/minimum_draws.cpp
• running time.cpp → solutions/cpp/running_time.cpp
• service lane.c → solutions/cpp/service_lane.cpp
• sherlock and beast.c → solutions/cpp/sherlock_and_beast.cpp
• songs of pi.cpp → solutions/cpp/songs_of_pi.cpp
• utopian tree.cpp → solutions/cpp/utopian_tree.cpp

How to build

See README.md for simple compile/run examples.

Notes

This PR intentionally focuses on repository usability and maintainability. It does not attempt to rewrite algorithms or change solution behavior.