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Coding Interview Resources

Coding Interview Resources

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This channel contains the free resources and solution of coding problems which are usually asked in the interviews. Managed by: @love_data

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๐Ÿ“ˆ Analytical overview of Telegram channel Coding Interview Resources

Channel Coding Interview Resources (@crackingthecodinginterview) in the English language segment is an active participant. Currently, the community unites 52 119 subscribers, ranking 2 566 in the Technologies & Applications category and 7 223 in the India region.

๐Ÿ“Š Audience metrics and dynamics

Since its creation on ะฝะตะฒั–ะดะพะผะพ, the project has demonstrated rapid growth, gathering an audience of 52 119 subscribers.

According to the latest data from 07 June, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by 156 over the last 30 days and by 4 over the last 24 hours, overall reach remains high.

  • Verification status: Not verified
  • Engagement rate (ER): The average audience engagement rate is 2.10%. Within the first 24 hours after publication, content typically collects 0.82% reactions from the total number of subscribers.
  • Post reach: On average, each post receives 1 094 views. Within the first day, a publication typically gains 425 views.
  • Reactions and interaction: The audience actively supports content: the average number of reactions per post is 2.
  • Thematic interests: Content is focused on key topics such as array, stack, algorithm, programming, sort.

๐Ÿ“ Description and content policy

The author describes the resource as a platform for expressing subjective opinions:
โ€œThis channel contains the free resources and solution of coding problems which are usually asked in the interviews. Managed by: @love_dataโ€

Thanks to the high frequency of updates (latest data received on 08 June, 2026), the channel maintains relevance and a high level of publication reach. Analytics show that the audience actively interacts with content, making it an important point of influence in the Technologies & Applications category.

52 119
Subscribers
+424 hours
+397 days
+15630 days
Posts Archive
๐Ÿ”ฅ ๐—”๐—œ & ๐——๐—ฎ๐˜๐—ฎ ๐—ฆ๐—ฐ๐—ถ๐—ฒ๐—ป๐—ฐ๐—ฒ ๐—ฃ๐—ฟ๐—ผ๐—ณ๐—ฒ๐˜€๐˜€๐—ถ๐—ผ๐—ป๐—ฎ๐—น ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป Upgrade your career with one of the mos
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๐——๐—ฒ๐˜ƒ๐—ข๐—ฝ๐˜€ ๐—™๐—ฅ๐—˜๐—˜ ๐—ข๐—ป๐—น๐—ถ๐—ป๐—ฒ ๐— ๐—ฎ๐˜€๐˜๐—ฒ๐—ฟ๐—ฐ๐—น๐—ฎ๐˜€๐˜€ ๐—•๐˜† ๐—œ๐—ป๐—ฑ๐˜‚๐˜€๐˜๐—ฟ๐˜† ๐—˜๐˜…๐—ฝ๐—ฒ๐—ฟ๐˜๐˜€๐Ÿ˜ - Bridge the Gap Between Your Current Skills and What DevOps Roles Demand - Know The Roadmap To Become DevOps Engineer In 2026 Eligibility :- Students ,Freshers & Working Professionals ๐—ฅ๐—ฒ๐—ด๐—ถ๐˜€๐˜๐—ฒ๐—ฟ ๐—™๐—ผ๐—ฟ ๐—™๐—ฅ๐—˜๐—˜๐Ÿ‘‡ :-  https://pdlink.in/40YmeqV ( Limited Slots ..Hurry Up๐Ÿƒโ€โ™‚๏ธ ) Date & Time :- March 10 , 2026 , 7:00 PM

Top Coding Domains You Should Explore in 2026 โœ… โ€ข Backend Development Build server-side systems Handle logic, databases, APIs Core skills Languages: Java, Python, Node.js Databases: MySQL, PostgreSQL, MongoDB APIs: REST, GraphQL Auth, caching, scalability Who fits: Strong logic, system thinking, long-term products โ€ข Frontend Development Build user interfaces Focus on user experience Core skills HTML, CSS, JavaScript React, Angular, Vue State management, browser performance Who fits: Visual thinkers, UI focus, fast feedback lovers โ€ข Mobile App Development Build Android and iOS apps Core skills Android: Kotlin, Java iOS: Swift Flutter, React Native App lifecycle Who fits: Mobile-first mindset, product builders, app store focus โ€ข Data Analytics Turn data into insights Core skills SQL, Excel Python Power BI, Tableau Who fits: Business thinkers, numbers-driven minds, decision support roles โ€ข Data Science and ML Build predictive systems Core skills Python Statistics Machine learning Pandas, NumPy, scikit-learn Who fits: Math interest, research mindset, model builders โ€ข DevOps and Cloud Deploy and scale systems Core skills Linux AWS, Azure, GCP Docker, Kubernetes CI/CD Who fits: Automation lovers, system reliability focus, high-pressure roles โ€ข Cybersecurity Protect systems and data Core skills Networking Linux Security tools Risk analysis Who fits: Detail-oriented, defensive mindset, compliance roles โ€ข Game Development Build interactive games Core skills C++, C# Unity, Unreal Physics basics, game logic Who fits: Creative coders, graphics interest, real-time systems Best career advice โ€ข Pick one domain โ€ข Build real projects โ€ข Learn tools used in jobs โ€ข Switch later if needed Which domain are you targeting next? Development ๐Ÿ‘ Data โค๏ธ DevOps/ Cybersecurity ๐Ÿ™ Still exploring ๐Ÿ˜ฎ

๐Ÿš€๐—š๐—ฒ๐˜ ๐—ง๐—ผ๐—ฝ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป๐˜€ ๐—œ๐—œ๐—ง's & ๐—œ๐—œ๐—  Dreaming of studying at an IIT and building a career in AI ? T
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FREE sites to improve your coding knowledge ๐Ÿ‘จ๐Ÿปโ€๐Ÿ’ป๐Ÿ“ - ๐ŸŒ HTML - w3schools.com ๐Ÿ’… CSS - web.dev/learn/css ๐Ÿ”ฅ JavaScript - javascript.info ๐Ÿ™ Git and Github - git-scm.com ๐Ÿ“š API - rapidapi.com/learn ๐Ÿ Python - t.me/pythonproz โš›๏ธ React - react-tutorial.app ๐ŸŽก Laravel - laracasts.com ๐ŸŒŸ VueJS - learnvue.co ๐Ÿ” SQL - t.me/sqlspecialist ๐ŸŒˆ Tailwind CSS - tailwindcss.com ๐Ÿš€ Go - gobyexample.com ๐Ÿณ Docker - docker-curriculum.com ๐Ÿฆ‹ Flutter - flutter.dev/learn ๐Ÿฆ€ Rust - rust-lang.org/learn ๐Ÿง  AI/ML - t.me/machinelearning_deeplearning โš™๏ธ DevOps - t.me/AWS_GCP_Azure ๐Ÿงฉ TypeScript - typescriptlang.org/learn React โค๏ธ for more like this

๐—œ๐—œ๐—ง ๐—ฅ๐—ผ๐—ผ๐—ฟ๐—ธ๐—ฒ๐—ฒ ๐—ข๐—ณ๐—ณ๐—ฒ๐—ฟ๐—ถ๐—ป๐—ด ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—ฃ๐—ฟ๐—ผ๐—ด๐—ฟ๐—ฎ๐—บ ๐—ถ๐—ป ๐——๐—ฎ๐˜๐—ฎ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜๐—ถ๐—ฐ๐˜€๐Ÿ“Š ๐˜„๐—ถ๐˜๐—ต
๐—œ๐—œ๐—ง ๐—ฅ๐—ผ๐—ผ๐—ฟ๐—ธ๐—ฒ๐—ฒ ๐—ข๐—ณ๐—ณ๐—ฒ๐—ฟ๐—ถ๐—ป๐—ด ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—ฃ๐—ฟ๐—ผ๐—ด๐—ฟ๐—ฎ๐—บ ๐—ถ๐—ป ๐——๐—ฎ๐˜๐—ฎ ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜๐—ถ๐—ฐ๐˜€๐Ÿ“Š ๐˜„๐—ถ๐˜๐—ต ๐—”๐—œ ๐—ฎ๐—ป๐—ฑ ๐—š๐—ฒ๐—ป ๐—”๐—œ ๐Ÿ˜ Placement Assistance With 5000+ companies. ๐Ÿ”ฅ Companies are actively hiring candidates with Data Analytics skills. ๐ŸŽ“ Prestigious IIT certificate ๐Ÿ”ฅ Hands-on industry projects ๐Ÿ“ˆ Career-ready skills for data & AI jobs ๐‘๐ž๐ ๐ข๐ฌ๐ญ๐ž๐ซ ๐๐จ๐ฐ๐Ÿ‘‡ :-  https://pdlink.in/4rwqIAm Limited seats available. Apply now to secure your spot

9 tips to get better at debugging code: Read error messages carefully โ€” they often tell you everything Use print/log statements to trace code execution Check one small part at a time Reproduce the bug consistently Use a debugger to step through code line by line Compare working vs broken code Check for typos, null values, and off-by-one errors Rubber duck debugging โ€” explain your code out loud Take breaks โ€” fresh eyes spot bugs faster Coding Interview Resources:๐Ÿ‘‡ https://whatsapp.com/channel/0029VammZijATRSlLxywEC3X ENJOY LEARNING ๐Ÿ‘๐Ÿ‘

๐—”๐—œ & ๐——๐—ฎ๐˜๐—ฎ ๐—ฆ๐—ฐ๐—ถ๐—ฒ๐—ป๐—ฐ๐—ฒ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—ฃ๐—ฟ๐—ผ๐—ด๐—ฟ๐—ฎ๐—บ ๐—•๐˜† ๐—œ๐—œ๐—ง ๐—ฅ๐—ผ๐—ผ๐—ฟ๐—ธ๐—ฒ๐—ฒ ๐Ÿ˜ ๐Ÿ‘‰Learn from IIT facul
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๐Ÿ’ป Coding Interview Foundations โ€” Part 1: Programming Language ๐Ÿš€ Before jumping into Data Structures & Algorithms, master one programming language deeply. (Recommended: Python โ€” simple, powerful, interview-friendly โญ) ๐Ÿ”น What You Must Master โœ… 1. Syntax & Basics - Variables - Data types โ†’ int, float, str, bool - Lists, Tuples, Sets, Dictionaries - Input / Output - Type casting ๐Ÿ‘‰ If syntax is weak โ†’ logic wonโ€™t help in interviews. โœ… 2. Loops & Conditions - if-else statements - for loop - while loop - break, continue - Nested loops ๐Ÿ”ฅ Used in almost every coding problem. โœ… 3. Functions - Function definition - Parameters & return values - Default arguments - Recursion basics โœ” Helps write modular and structured code. โœ… 4. Important Built-in Libraries (Python Users โญ) - collections โ†’ Counter, defaultdict - heapq โ†’ Priority Queue - math - itertools Using built-ins efficiently = strong problem solving. โœ… 5. Writing Clean Code - Meaningful variable names - Small reusable functions - Handle edge cases - Clear logic structure Interviewers evaluate thinking + code quality. โฑ๏ธ Recommended Time Beginner โ†’ 2 weeks Intermediate โ†’ 4โ€“5 days revision Daily: 30 min concept revision 1โ€“2 practice problems โŒ Avoid These Mistakes - Learning multiple languages at once - Jumping to advanced topics too early - Memorizing solutions without understanding Python Resources: https://whatsapp.com/channel/0029VbBDoisBvvscrno41d1l Double Tap โ™ฅ๏ธ For More

๐—ง๐—ผ๐—ฝ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป๐˜€ ๐—ข๐—ณ๐—ณ๐—ฒ๐—ฟ๐—ฒ๐—ฑ ๐—•๐˜† ๐—œ๐—œ๐—ง'๐˜€ & ๐—œ๐—œ๐—  ๐Ÿ˜ Placement Assistance With 5000+ companies. Comp
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๐Ÿ’ป Donโ€™t Overwhelm to Prepare for Coding Interviews โ€” Itโ€™s Only This Much ๐Ÿš€ ๐Ÿ”น FOUNDATIONS (Must First) 1๏ธโƒฃ Programming Language Mastery - Choose one: Python โญ (most popular) Java C++ JavaScript - Focus on: Syntax Loops & conditions Functions Built-in libraries Writing clean code 2๏ธโƒฃ Time & Space Complexity - Big-O notation - Time vs space tradeoff - Best / average / worst case - Complexity analysis ๐Ÿ”ฅ Very important for interviews 3๏ธโƒฃ Problem Solving Basics - Pattern recognition - Breaking problems into steps - Writing pseudocode - Edge case handling ๐Ÿ”ฅ CORE DATA STRUCTURES (HIGH PRIORITY) 4๏ธโƒฃ Arrays - Traversal - Two pointer technique - Sliding window - Prefix sum (๐Ÿ”ฅ Most asked topic) 5๏ธโƒฃ Strings - Manipulation - Palindrome problems - Pattern matching 6๏ธโƒฃ Hashing - HashMap / Dictionary - Frequency counting - Fast lookup problems 7๏ธโƒฃ Linked List - Insert/delete operations - Reverse list - Fast & slow pointer 8๏ธโƒฃ Stack & Queue - LIFO / FIFO - Valid parentheses - Monotonic stack 9๏ธโƒฃ Trees - Binary tree traversal - Binary Search Tree - Recursion - Tree depth / height (๐Ÿ”ฅ Very important) ๐Ÿ”Ÿ Heap / Priority Queue - Min / max heap - Top K problems 1๏ธโƒฃ1๏ธโƒฃ Graphs - BFS / DFS - Shortest path - Cycle detection ๐Ÿš€ ALGORITHMS (CORE INTERVIEW TOPICS) 1๏ธโƒฃ2๏ธโƒฃ Searching Algorithms - Linear search - Binary search 1๏ธโƒฃ3๏ธโƒฃ Sorting Algorithms - Quick sort - Merge sort - Heap sort 1๏ธโƒฃ4๏ธโƒฃ Recursion & Backtracking - Subsets - Permutations - N-Queens 1๏ธโƒฃ5๏ธโƒฃ Greedy Algorithms - Activity selection - Interval problems 1๏ธโƒฃ6๏ธโƒฃ Dynamic Programming (DP) - Memoization - Tabulation - Knapsack problems (๐Ÿ”ฅ Hard but high-value topic) โš™๏ธ INTERVIEW SKILLS 1๏ธโƒฃ7๏ธโƒฃ Coding Patterns (Must Know โญ) - Two pointers - Sliding window - Fast & slow pointers - Divide & conquer - Backtracking - BFS / DFS patterns 1๏ธโƒฃ8๏ธโƒฃ Writing Clean Code - Readable variable names - Modular functions - Handling edge cases 1๏ธโƒฃ9๏ธโƒฃ Debugging Skills - Test cases - Dry run - Error fixing 2๏ธโƒฃ0๏ธโƒฃ Communication During Interview - Explain approach first - Think aloud - Discuss complexity (๐Ÿ”ฅ Often ignored but important) ๐ŸŒŸ ADVANCED / TOP COMPANY PREP 2๏ธโƒฃ1๏ธโƒฃ System Design Basics - Scalability - Load balancing - Architecture concepts 2๏ธโƒฃ2๏ธโƒฃ Object-Oriented Design - Classes & objects - Design principles - Low-level design 2๏ธโƒฃ3๏ธโƒฃ Competitive Programming (Optional) - Codeforces - LeetCode contests โญ Best Practice Platforms - LeetCode โญ - HackerRank - Codeforces - GeeksforGeeks โญ Double Tap โ™ฅ๏ธ For More

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โœ… Backend Basics Interview Questions โ€“ Part 1 (Node.js) ๐Ÿง ๐Ÿ’ป ๐Ÿ“ 1. What is Node.js? A: Node.js is a runtime environment that lets you run JavaScript on the server side. It uses Googleโ€™s V8 engine and is designed for building scalable network applications. ๐Ÿ“ 2. How is Node.js different from traditional server-side platforms? A: Unlike PHP or Java, Node.js is event-driven and non-blocking. This makes it lightweight and efficient for I/O-heavy operations like APIs and real-time apps. ๐Ÿ“ 3. What is the role of the package.json file? A: It stores metadata about your project (name, version, scripts) and dependencies. Itโ€™s essential for managing and sharing Node.js projects. ๐Ÿ“ 4. What are CommonJS modules in Node.js? A: Node uses CommonJS to handle modules. You use require() to import and module.exports to export code between files. ๐Ÿ“ 5. What is the Event Loop in Node.js? A: It allows Node.js to handle many connections asynchronously without blocking. Itโ€™s the heart of Nodeโ€™s non-blocking architecture. ๐Ÿ“ 6. What is middleware in Node.js (Express)? A: Middleware functions process requests before sending a response. They can be used for logging, auth, validation, etc. ๐Ÿ“ 7. What is the difference between process.nextTick(), setTimeout(), and setImmediate()? A: โฆ process.nextTick() runs after the current operation, before the next event loop. โฆ setTimeout() runs after a minimum delay. โฆ setImmediate() runs on the next cycle of the event loop. ๐Ÿ“ 8. What is a callback function in Node.js? A: A function passed as an argument to another function, executed after an async task finishes. Itโ€™s the core of async programming in Node. ๐Ÿ“ 9. What are Streams in Node.js? A: Streams let you read/write data piece-by-piece (chunks), great for handling large files. Types: Readable, Writable, Duplex, Transform. ๐Ÿ“ 10. What is the difference between require and import? A: โฆ require is CommonJS (used in Node.js by default). โฆ import is ES6 module syntax (used with "type": "module" in package.json). ๐Ÿ’ฌ Tap โค๏ธ for more!

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PROJECT IDEAS โœจ ๐ŸŸข Beginner Level (Python Foundations) ๐Ÿ‘‰| Number Guessing Game (CLI + GUI) ๐Ÿ‘‰| To-Do List App (File-based / Tkinter) ๐Ÿ‘‰| Weather App using API ๐Ÿ‘‰| Password Generator & Strength Checker ๐Ÿ‘‰| URL Shortener ๐Ÿ‘‰| Calculator with Voice Input ๐Ÿ‘‰| Quiz App with Score Tracking ๐Ÿ‘‰| Basic Web Scraper (News / Jobs) ๐Ÿ‘‰| Expense Tracker ๐Ÿ‘‰| Chatbot using Rule-Based Logic ๐ŸŸก Intermediate Level (Data + ML Basics) ๐Ÿ‘‰| Movie Recommendation System ๐Ÿ‘‰| Stock Price Visualization Dashboard ๐Ÿ‘‰| Email Spam Classifier ๐Ÿ‘‰| Resume Parser using NLP ๐Ÿ‘‰| Face Detection App (OpenCV) ๐Ÿ‘‰| Fake News Detection ๐Ÿ‘‰| Handwritten Digit Recognition ๐Ÿ‘‰| Twitter / Reddit Sentiment Analyzer ๐Ÿ‘‰| House Price Prediction ๐Ÿ‘‰| OCR System (Image โ†’ Text) ๐Ÿ”ต Advanced Level (AI Systems & Real-World Products) ๐Ÿ‘‰| Voice Assistant (Jarvis-like) ๐Ÿ‘‰| Real-Time Face Recognition System ๐Ÿ‘‰| AI Interview Bot ๐Ÿ‘‰| Autonomous Web Scraping Agent ๐Ÿ‘‰| YouTube Video Summarizer (NLP + LLMs) ๐Ÿ‘‰| AI Study Planner ๐Ÿ‘‰| ChatGPT-powered Customer Support Bot ๐Ÿ‘‰| Recommendation Engine with Deep Learning ๐Ÿ‘‰| Fraud Detection System ๐Ÿ‘‰| Document Question Answering System ๐Ÿ”ด Expert / Startup-Level (AI Agents & Full Products) ๐Ÿ‘‰| Multi-Agent Task Automation System ๐Ÿ‘‰| AI Coding Assistant (like Copilot mini) ๐Ÿ‘‰| Personalized Learning AI Coach ๐Ÿ‘‰| Autonomous Trading Bot ๐Ÿ‘‰| AI Content Creation Pipeline (Reels, Blogs, Shorts) ๐Ÿ‘‰| AI Research Assistant ๐Ÿ‘‰| Smart Resume Matching System ๐Ÿ‘‰| AI SaaS for Social Media Automation ๐Ÿ‘‰| Real-Time Speech Translation System ๐Ÿ‘‰| End-to-End AI Search Engine

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Top 5 Mistakes to Avoid When Learning Programming โŒ๐Ÿ’ป 1๏ธโƒฃ Skipping the Basics Jumping into advanced topics without learning fundamentals like variables, loops, and functions slows real progress. Start simple. 2๏ธโƒฃ Only Watching Tutorials Watching is passive. Code along and build your own projects. Learning comes from doing. 3๏ธโƒฃ Copy-Pasting Without Understanding Donโ€™t just copy code from the internet. Break it down and learn what each part does. 4๏ธโƒฃ Avoiding Debugging Debugging teaches problem-solving. Donโ€™t fear errorsโ€”read them, fix them, learn from them. 5๏ธโƒฃ Trying to Learn Too Many Languages Stick to one language (like Python or JavaScript) until you're confident. Depth matters more than variety. ๐Ÿ’ฌ Tap โค๏ธ for more!

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