Programming Tutorials, Exercises & Guides

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GoLang Cheat Sheet (PDF) – Syntax, Commands, Data Types & Concurrency for Beginners & Developers

Cheat Sheets | Nov. 7, 2025, 2:40 a.m.

Introduction to the GoLang Cheat Sheet If you’re searching for a clear and practical GoLang cheat sheet, you’re in the right place. Go, or Golang, is a modern programming language developed by Google, known for its speed, simplicity, and excellent support for concurrency. It’s widely used in cloud development, backend systems, DevOps tools, and scalable web applications. This GoLang cheat sheet by Solviyo is your quick reference guide — covering everything from Go syntax and variables to advanced concepts like goroutines, channels, and interfaces. You can read it online or download the GoLang cheat sheet PDF for offline learning. If

Git Cheat Sheet (PDF) – Commands, Examples & Quick Reference

Cheat Sheets | Oct. 2, 2025, 10:24 a.m.

Overview of This Git Cheat Sheet If you’re looking for the most practical and complete Git Cheat Sheet, you’ve come to the right place. Git is the most widely used version control system, trusted by developers, teams, and companies worldwide to manage source code and collaborate efficiently. This Git reference guide by Solviyo is your one-stop resource — whether you’re a beginner learning Git basics or an experienced developer working on complex projects. In this cheat sheet, you’ll find all the essential Git commands with examples, organized into clear sections such as repository setup, branching, merging, stashing, undoing mistakes, and

Hackerrank Sales By Mach Problem Solution in Python & Java

OJ Solutions | Sept. 30, 2025, 2:05 a.m.

Problem Overview The Sales By Mach problem on HackerRank is a classic counting problem. You are given a pile of socks, each with a color represented by an integer. The

Python Cheat Sheet PDF – Syntax, Commands, Data Structures for Beginners & Developers

Cheat Sheets | Sept. 27, 2025, 6:20 p.m.

Introduction to the Python Cheat Sheet If you’re looking for the most practical Python cheat sheet, you’ve come to the right place. Python is one of the world’s most popular programming languages — loved by beginners for its simplicity and trusted by professionals for its power in web development, data science, artificial intelligence, machine learning, and automation. This Python cheat sheet by Solviyo is your complete reference, covering everything from basic syntax and variables to advanced topics like object-oriented programming, decorators, generators, async, and modules. You can read it online or download the PDF for offline use. Whether you are

LeetCode Add Two Numbers Problem Solution in C++, Python & Java

OJ Solutions | Sept. 25, 2025, 12:57 a.m.

Problem Overview The Add Two Numbers problem on LeetCode involves working with linked lists. You are given two non-empty linked lists representing two non-negative integers. The digits are stored in

LeetCode Two Sum Problem Solution in C++ and Go

OJ Solutions | Sept. 25, 2025, 12:40 a.m.

Problem Overview The Two Sum problem on LeetCode is one of the most popular beginner-friendly problems. It asks us to find two distinct indices in an array such that the

Counting Valleys HackerRank Solution in Python & Java | Step-by-Step Guide

OJ Solutions | Sept. 22, 2025, 12:41 a.m.

Problem Overview The Counting Valleys problem on HackerRank asks you to determine how many valleys a hiker walks through during a hike. The hiker's path is represented as a string

HackerRank Repeated String Problem Solution in C++ | Count 'a' Efficiently

OJ Solutions | Sept. 21, 2025, 8:58 a.m.

Problem Overview The Repeated String problem on HackerRank asks you to determine how many times the letter 'a' appears in the first n characters of an infinitely repeated string. You

HackerRank Jumping on the Clouds Problem Solution in Python & Java | Minimum Jumps Algorithm

OJ Solutions | Sept. 11, 2025, 4:18 p.m.

Why Solving HackerRank Jumping on the Clouds Problem Is Important? Array and greedy problems like HackerRank Jumping on the Clouds are more than just coding exercises—they help you develop strong

HackerRank Alternating Characters Solution in C++ | Approaches & Optimization

OJ Solutions | Sept. 11, 2025, 3:50 p.m.

Why Solving HackerRank Alternating Characters Problem Is Important? String problems like HackerRank Alternating Characters are more than just coding puzzles—they strengthen your understanding of string manipulation, consecutive duplicate detection, and

HackerRank Roads and Libraries Problem Solution in C++ | DFS Approach Explained

OJ Solutions | Aug. 19, 2025, 5:38 p.m.

Why Solving HackerRank’s Roads and Libraries Problem Is Important Graph-based challenges like HackerRank Roads and Libraries are not just about building libraries or repairing roads—they strengthen your graph traversal, connected

Even Tree HackerRank Problem Solution in C++ with Step-by-Step Explanation

OJ Solutions | Aug. 19, 2025, 4:33 p.m.

Why Solving HackerRank’s “Even Tree” Problem Is Important? Tree-based challenges like HackerRank’s Even Tree problem go far beyond counting edges or performing simple traversals—they strengthen your logical reasoning, recursive thinking,

LeetCode 172 Factorial Trailing Zeroes Solution – C++ Implementation and Explanation

OJ Solutions | Aug. 16, 2025, 5:23 p.m.

Why Solving LeetCode 172 – Factorial Trailing Zeroes Is Important? Mathematical problems like LeetCode 172: Factorial Trailing Zeroes are not just about finding the number of zeros in a factorial—they

LeetCode 3163 String Compression III Solution – C++ Implementation and Explanation

OJ Solutions | Aug. 14, 2025, 6:15 p.m.

Why Solving LeetCode 3163: String Compression III in C++ is Important? LeetCode 3163, String Compression III, is more than just a coding challenge—it's a practical exercise in C++ string manipulation

LeetCode 185 Department Top Three Salaries Solution Explained

OJ Solutions | Aug. 14, 2025, 5:46 p.m.

Why Solving Department Top Three Salaries SQL Problem is Important SQL problems like LeetCode 185: Department Top Three Salaries are not just exercises—they are essential for mastering SQL query writing

Why Learning Go (Golang) in 2025 Is a Smart Move: A Beginner’s Guide to the Future of Programming

Tech Trends | April 12, 2025, 7:19 p.m.

Introduction As someone who’s been exploring modern development trends, I’ve realized that picking the right programming language can make a big difference—not just in how fast you build, but how

Python vs Java in 2025: Which Language Should Beginners Learn First and Why?

Tech Trends | April 12, 2025, 7:15 p.m.

Introduction In today’s fast-changing tech world, coding has gone from a niche skill to something almost everyone needs. Whether you’re starting your tech career, planning to launch a startup, or