Ullas Kunder Blog https://ullaskunder.tech Technical posts, ideas, and dev logs by Ullas Kunder en-us graphics.h template https://ullaskunder.tech/blogs/graphics-template https://ullaskunder.tech/blogs/graphics-template Sat, 03 Apr 2021 00:00:00 GMT Basic c++ graphics lib setup template up and running What is markdown https://ullaskunder.tech/blogs/how-to-write-makdown https://ullaskunder.tech/blogs/how-to-write-makdown Sat, 24 Apr 2021 00:00:00 GMT what how and why to know about markdown readme.md content Sort Visualization using p5.js https://ullaskunder.tech/blogs/sorting-p5-visualization https://ullaskunder.tech/blogs/sorting-p5-visualization Sat, 08 May 2021 00:00:00 GMT Bubble sort can be implemented as follows: 6 steps to create a pull request https://ullaskunder.tech/blogs/how-to-git-hub-contribution https://ullaskunder.tech/blogs/how-to-git-hub-contribution Wed, 08 Sep 2021 00:00:00 GMT How to contribute to a project on Github, If you are looking to make your first github contribution... Setting up graphics.h lib in Visual Studio Code (C++) https://ullaskunder.tech/blogs/setup-graphics-lib https://ullaskunder.tech/blogs/setup-graphics-lib Wed, 08 Sep 2021 00:00:00 GMT Step-by-Step Guide to Configure graphics.h Library in Visual Studio Code for C++ Development Basic of React 17 https://ullaskunder.tech/blogs/basic-of-react17 https://ullaskunder.tech/blogs/basic-of-react17 Fri, 24 Sep 2021 00:00:00 GMT Lets learn building large react app by building smaller react components and then composing them together JavaScript In-Place Array Manipulation https://ullaskunder.tech/blogs/remove-from-array https://ullaskunder.tech/blogs/remove-from-array Sun, 09 Jul 2023 00:00:00 GMT Remove Duplicate Numbers from Sorted Arrays in JavaScript Learn Regular Expressions https://ullaskunder.tech/blogs/learn-regular-expression https://ullaskunder.tech/blogs/learn-regular-expression Wed, 12 Jul 2023 00:00:00 GMT A Comprehensive Guide to Mastering Regular Expressions in JavaScript, including freeCodeCamp and additional content Essential React Hooks: A Comprehensive Guide https://ullaskunder.tech/blogs/basic-of-react-hooks https://ullaskunder.tech/blogs/basic-of-react-hooks Tue, 18 Jul 2023 00:00:00 GMT Learn about the most important React hooks and how to use them to enhance your functional components. Comprehensive Guide to Advanced JavaScript Concepts https://ullaskunder.tech/blogs/advance-javascript https://ullaskunder.tech/blogs/advance-javascript Wed, 02 Aug 2023 00:00:00 GMT In-Depth Exploration of JavaScript Execution Contexts, Closures, Promises, Async/Await, Object-Oriented Programming, Prototypes, and More Complete Typescript https://ullaskunder.tech/blogs/complete-typescript https://ullaskunder.tech/blogs/complete-typescript Thu, 24 Aug 2023 00:00:00 GMT Learn react 18 with typescript The Enchanting Guide to JavaScript Exports and Imports https://ullaskunder.tech/blogs/named-and-default-exports https://ullaskunder.tech/blogs/named-and-default-exports Mon, 29 Jan 2024 00:00:00 GMT Unraveling the Secrets of Named and Default Exports with Joy Using GitHub as a Headless CMS for Blogs with Next.js – and Publishing to dev.to + RSS! https://ullaskunder.tech/blogs/github-as-markdown-blog-cms https://ullaskunder.tech/blogs/github-as-markdown-blog-cms Thu, 08 May 2025 00:00:00 GMT Learn how to build a fast, modern blog using GitHub as a content store, MDX for writing, Next.js for rendering, and RSS feeds to publish automatically to dev.to Check if a Subarray with Zero Sum Exists – Prefix Sum in Action https://ullaskunder.tech/blogs/check-subarray-zero https://ullaskunder.tech/blogs/check-subarray-zero Thu, 26 Jun 2025 00:00:00 GMT Understand how to check for a zero-sum subarray using both brute-force and prefix sum techniques, with step-by-step code in Python and JavaScript. Find Pair with Given Sum in an Array – Brute-force and Optimal Approaches https://ullaskunder.tech/blogs/find-pair https://ullaskunder.tech/blogs/find-pair Thu, 26 Jun 2025 00:00:00 GMT Explore how to find two elements in an array that sum up to a target value using brute-force and hash map techniques in both Python and JavaScript. Print All Zero-Sum Subarrays – From Brute-Force to Prefix Hashing https://ullaskunder.tech/blogs/print-all-zero-sum-subarray https://ullaskunder.tech/blogs/print-all-zero-sum-subarray Thu, 26 Jun 2025 00:00:00 GMT Explore how to find and print all subarrays that sum to zero using both brute-force and efficient prefix-sum + hashmap techniques in Python. Automating My MDX Blog Workflow with a Simple Node.js Script https://ullaskunder.tech/blogs/automating-my-mdx-blog-workflow-with-a-simple-node-js-script https://ullaskunder.tech/blogs/automating-my-mdx-blog-workflow-with-a-simple-node-js-script Thu, 04 Sep 2025 00:00:00 GMT Streamlining MDX blog posts with a single Node.js command debouncing-in-js https://ullaskunder.tech/blogs/debouncing-in-js https://ullaskunder.tech/blogs/debouncing-in-js Tue, 09 Sep 2025 00:00:00 GMT How to improve performance and user experience in your web apps using JavaScript debouncing. This guide explains when, why, and how to use debounce with two interactive examples — a basic typing activity tracker and an advanced API search simulator. See how debouncing reduces unnecessary events and network requests with live demos. Deep dive into Javascript heartbeat: queues, loops & Async https://ullaskunder.tech/blogs/understanding-javascript-heartbeat-queues-loops https://ullaskunder.tech/blogs/understanding-javascript-heartbeat-queues-loops Tue, 09 Sep 2025 00:00:00 GMT Learn how Javascript Event Loop, Call Stack, Microtasks, and Macrotasks collaborate to prevent blocking, manage asynchronous tasks, and power seamless interactions on modern web applications. Two Sum – Brute Force vs Hashing https://ullaskunder.tech/blogs/two-sum-brute-force-vs-hashing https://ullaskunder.tech/blogs/two-sum-brute-force-vs-hashing Tue, 23 Sep 2025 00:00:00 GMT Solve the classic Two Sum problem using brute-force and optimized hashing techniques, a must-know algorithm for coding interviews. Longest Substring Without Repeating Characters – Sliding Window https://ullaskunder.tech/blogs/longest-substring-without-repeating-characters-sliding-window https://ullaskunder.tech/blogs/longest-substring-without-repeating-characters-sliding-window Tue, 23 Sep 2025 00:00:00 GMT Learn how to efficiently find the longest substring with unique characters using sliding window and hashmap in Python and JavaScript. How to Reset Your PostgreSQL Password on Windows (2025) https://ullaskunder.tech/blogs/how-to-reset-your-postgresql-password-on-windows-2025 https://ullaskunder.tech/blogs/how-to-reset-your-postgresql-password-on-windows-2025 Wed, 24 Sep 2025 00:00:00 GMT Learn how to reset your PostgreSQL password on Windows 10 & 11 without reinstalling. Step-by-step guide for PostgreSQL 17 users (2025). solve leetcode Reverse an Array https://ullaskunder.tech/blogs/solve-leetcode-reverse-an-array https://ullaskunder.tech/blogs/solve-leetcode-reverse-an-array Wed, 01 Oct 2025 00:00:00 GMT Learn how to reverse an array efficiently using brute force and optimal approaches in Python and JavaScript. solve leetcode find minimum and maximum in an array https://ullaskunder.tech/blogs/solve-leetcode-find-minimum-and-maximum-in-an-array https://ullaskunder.tech/blogs/solve-leetcode-find-minimum-and-maximum-in-an-array Wed, 01 Oct 2025 00:00:00 GMT Learn how to efficiently find the smallest and largest elements in an array using simple and optimal techniques in Python and JavaScript. solve leetcode Rotate an array to the right by k steps https://ullaskunder.tech/blogs/solve-leetcode-rotate-an-array-to-the-right-by-k-steps https://ullaskunder.tech/blogs/solve-leetcode-rotate-an-array-to-the-right-by-k-steps Wed, 01 Oct 2025 00:00:00 GMT Learn how to rotate an array efficiently using the reverse approach in Python and JavaScript with step-by-step explanation. Python Slicing 101 Essential Techniques https://ullaskunder.tech/blogs/python-slicing-101-essential-techniques https://ullaskunder.tech/blogs/python-slicing-101-essential-techniques Fri, 10 Apr 2026 00:00:00 GMT From Basic Indexing to Advanced Patterns—Master the Most Elegant Feature of Python Adding a sneaky system tray to Wails v2 without locking your threads https://ullaskunder.tech/blogs/adding-a-sneaky-system-tray-to-wails-v2-without-locking-your-threads https://ullaskunder.tech/blogs/adding-a-sneaky-system-tray-to-wails-v2-without-locking-your-threads Mon, 13 Apr 2026 00:00:00 GMT Keep your background apps running smoothly by combining Wails and Systray without blocking the main OS thread What is a Tree in DSA? https://ullaskunder.tech/blogs/what-is-a-tree-in-dsa https://ullaskunder.tech/blogs/what-is-a-tree-in-dsa Wed, 15 Apr 2026 00:00:00 GMT Understanding the "Why" behind the most fundamental data structure. Traversal Algorithms: Navigating Trees and Graphs with BFS and DFS https://ullaskunder.tech/blogs/traversal-algorithms-navigating-trees-and-graphs-with-bfs-and-dfs https://ullaskunder.tech/blogs/traversal-algorithms-navigating-trees-and-graphs-with-bfs-and-dfs Thu, 16 Apr 2026 00:00:00 GMT Mastering Breadth-First and Depth-First Search. Binary Search Tree (BST) Concept and Operations https://ullaskunder.tech/blogs/binary-search-tree-bst-concept-and-operations https://ullaskunder.tech/blogs/binary-search-tree-bst-concept-and-operations Fri, 17 Apr 2026 00:00:00 GMT The data structure that keeps itself sorted — automatically. LeetCode 94: Binary Tree Inorder Traversal (Recursive vs Iterative) https://ullaskunder.tech/blogs/leetcode-94-binary-tree-inorder-traversal-recursive-vs-iterative https://ullaskunder.tech/blogs/leetcode-94-binary-tree-inorder-traversal-recursive-vs-iterative Fri, 17 Apr 2026 00:00:00 GMT Solving a classic DFS problem with both elegant recursion and a high-performance explicit stack. LeetCode 57: Insert Interval – Efficient Merging https://ullaskunder.tech/blogs/leetcode-57-insert-interval-efficient-merging https://ullaskunder.tech/blogs/leetcode-57-insert-interval-efficient-merging Sun, 19 Apr 2026 00:00:00 GMT Master the art of merging intervals with a clean, three-phase linear approach. LeetCode 239: Sliding Window Maximum https://ullaskunder.tech/blogs/leetcode-239-sliding-window-maximum https://ullaskunder.tech/blogs/leetcode-239-sliding-window-maximum Mon, 20 Apr 2026 00:00:00 GMT Master the Monotonic Deque approach to efficiently track the maximum value in a sliding window. LeetCode 23: Merge k Sorted Lists https://ullaskunder.tech/blogs/leetcode-23-merge-k-sorted-lists https://ullaskunder.tech/blogs/leetcode-23-merge-k-sorted-lists Tue, 21 Apr 2026 00:00:00 GMT Master the art of merging multiple sorted linked lists using Min-Heaps and Divide & Conquer strategies. LeetCode 417: Pacific Atlantic Water Flow https://ullaskunder.tech/blogs/leetcode-417-pacific-atlantic-water-flow https://ullaskunder.tech/blogs/leetcode-417-pacific-atlantic-water-flow Wed, 22 Apr 2026 00:00:00 GMT Mastering graph traversal by thinking backwards: How to find cells that flow to both oceans using BFS. Shipping PhysDaily: A Solo Engineer's Blueprint for AI-Powered Mobile Apps https://ullaskunder.tech/blogs/shipping-physdaily-a-solo-engineer-s-blueprint-for-ai-powered-mobile-apps https://ullaskunder.tech/blogs/shipping-physdaily-a-solo-engineer-s-blueprint-for-ai-powered-mobile-apps Thu, 23 Apr 2026 00:00:00 GMT From Blank IDE to Google Play: A Solo Engineer's Blueprint for Building AI-Powered Mobile Apps with Flutter and Firebase LeetCode 300: Longest Increasing Subsequence https://ullaskunder.tech/blogs/leetcode-300-longest-increasing-subsequence https://ullaskunder.tech/blogs/leetcode-300-longest-increasing-subsequence Sat, 25 Apr 2026 00:00:00 GMT Mastering the LIS problem with Dynamic Programming and Binary Search optimization.