--- title: "#coding-challenges articles | Hashnode" description: "Explore 7 articles tagged #coding-challenges on Hashnode. Tutorials, guides, and how-tos from the community." url: "https://hashnode.com/tag/coding-challenges" --- Tag # #coding-challenges 7 posts · 0 followers [Andrew Oduola Ayobami](https://hashnode.com/@andrew-oduola) · [Oct 28, 2025](https://hashnode.com/posts/python-30-days-challenge-day-1-area-of-a-circle-code-with-drew/6900d58087d4c8c0f5531a68) ### [Python 30 Days Challenge: Day 1 - Area of a Circle - Code With Drew](https://andrewoduola.hashnode.dev/python-30-days-challenge-day-1-area-of-a-circle-code-with-drew?utm_source=hashnode&utm_medium=feed) Python 30 days Challenge (Code With Drew), Andrew Oduola 3 min read · [andrewoduola.hashnode.dev](https://andrewoduola.hashnode.dev/python-30-days-challenge-day-1-area-of-a-circle-code-with-drew?utm_source=hashnode&utm_medium=feed) [Priya](https://hashnode.com/@CodeWithSai) · [Jul 28, 2025](https://hashnode.com/posts/day-2-operators-hackerrank-practice-with-c/6887ba0837ad0eac61eac498) ### [🔢 Day 2: Operators – HackerRank Practice with C#](https://codewithsai.hashnode.dev/day-2-operators-hackerrank-practice-with-c?utm_source=hashnode&utm_medium=feed) Master Day 2: Operators on HackerRank with C#. Calculate tip, tax, and total cost using clean logic and rounding. A beginner-friendly C# coding challenge. 2 min read · [codewithsai.hashnode.dev](https://codewithsai.hashnode.dev/day-2-operators-hackerrank-practice-with-c?utm_source=hashnode&utm_medium=feed) [Priya](https://hashnode.com/@CodeWithSai) · [Jul 28, 2025](https://hashnode.com/posts/day-1-mastering-data-types-and-inputoutput-in-c-a-hackerrank-practice-challenge/6887b508e32c01274845d806) ### [🔢 Day 1: Mastering Data Types and Input/Output in C# – A HackerRank Practice Challenge](https://codewithsai.hashnode.dev/day-1-mastering-data-types-and-inputoutput-in-c-a-hackerrank-practice-challenge?utm_source=hashnode&utm_medium=feed) Learn C# data types, console input/output, and string operations through a practical HackerRank challenge. 3 min read · [codewithsai.hashnode.dev](https://codewithsai.hashnode.dev/day-1-mastering-data-types-and-inputoutput-in-c-a-hackerrank-practice-challenge?utm_source=hashnode&utm_medium=feed) [Priya](https://hashnode.com/@CodeWithSai) · [Jul 25, 2025](https://hashnode.com/posts/how-to-find-non-overlapping-contiguous-subsequences-that-sum-to-a-target-in-c/68831e922cf5ca6542e75348) ### [🚀 How to Find Non-Overlapping Contiguous Subsequences That Sum to a Target in C#](https://codewithsai.hashnode.dev/how-to-find-non-overlapping-contiguous-subsequences-that-sum-to-a-target-in-c?utm_source=hashnode&utm_medium=feed) When working with data streams, logs, or financial time-series data, it's often important to detect continuous chunks of values that add up to a specific target. This C# solution is particularly useful when working with time-series arrays in .NET, or... 4 min read · [codewithsai.hashnode.dev](https://codewithsai.hashnode.dev/how-to-find-non-overlapping-contiguous-subsequences-that-sum-to-a-target-in-c?utm_source=hashnode&utm_medium=feed) [Emmanuel](https://hashnode.com/@emmanuelmalik) · [Apr 19, 2025](https://hashnode.com/posts/how-frontend-mentor-projects-finally-got-me-moving-again/6803e68a280efcf344b96fed) ### [How Frontend Mentor Projects Finally Got Me Moving Again](https://emmanuelmalik.hashnode.dev/how-frontend-mentor-projects-finally-got-me-moving-again?utm_source=hashnode&utm_medium=feed) Struggling with advanced JavaScript? In this post, I share how working on Frontend Mentor's beginner projects helped me push through frustration, improve my 4 min read · [emmanuelmalik.hashnode.dev](https://emmanuelmalik.hashnode.dev/how-frontend-mentor-projects-finally-got-me-moving-again?utm_source=hashnode&utm_medium=feed) [Lakshay Dhoundiyal](https://hashnode.com/@LakshayDhoundiyal) · [Nov 12, 2024](https://hashnode.com/posts/freshers-must-crack-ai-written-code-to-land-jobs-at-it-firms/673328525ff6efadd11e8e33) ### [Freshers Must Crack AI-Written Code to Land Jobs at IT Firms](https://lakshaydhoundiyal.hashnode.dev/freshers-must-crack-ai-written-code-to-land-jobs-at-it-firms?utm_source=hashnode&utm_medium=feed) AI in Hiring: A New Challenge for Freshers 5 min read · [lakshaydhoundiyal.hashnode.dev](https://lakshaydhoundiyal.hashnode.dev/freshers-must-crack-ai-written-code-to-land-jobs-at-it-firms?utm_source=hashnode&utm_medium=feed)