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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Red:📈 Análisis del canal de Telegram Coding Interview Resources
El canal Coding Interview Resources (@crackingthecodinginterview) en el segmento lingüístico de Inglés es un actor destacado. Actualmente la comunidad reúne a 52 206 suscriptores, ocupando la posición 2 484 en la categoría Tecnologías y Aplicaciones y el puesto 6 793 en la región India.
📊 Métricas de audiencia y dinámica
Desde su creación el невідомо, el proyecto ha mostrado un crecimiento acelerado, reuniendo a 52 206 suscriptores.
Según los últimos datos del 05 octubre, 2026, el canal mantiene una actividad estable. En los últimos 30 días la variación de miembros fue de -40, y en las últimas 24 horas de -10, conservando un alto alcance.
- Estado de verificación: No verificado
- Tasa de interacción (ER): El promedio de interacción de la audiencia es 1.77%. Durante las primeras 24 horas tras publicar, el contenido suele obtener 0.71% de reacciones respecto al total de suscriptores.
- Alcance de las publicaciones: Cada publicación recibe en promedio 922 visualizaciones. En el primer día suele acumular 371 visualizaciones.
- Reacciones e interacción: La audiencia responde de forma activa: el promedio de reacciones por publicación es 3.
- Intereses temáticos: El contenido se centra en temas clave como array, stack, algorithm, programming, sort.
📝 Descripción y política de contenido
El autor describe el recurso como un espacio para expresar opiniones subjetivas:
“This channel contains the free resources and solution of coding problems which are usually asked in the interviews.
Managed by: @love_data”
Gracias a la alta frecuencia de actualizaciones (últimos datos recibidos el 06 octubre, 2026), el canal mantiene la vigencia y un amplio alcance. La analítica demuestra que la audiencia interactúa activamente con el contenido, lo que lo convierte en un punto de referencia dentro de la categoría Tecnologías y Aplicaciones.
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Publicaciones del Canal
✅ Daily Coding Habits That Make You a Better Developer 🧠💻✨
1️⃣ Code Every Day (Even 30 Mins)
Consistency builds muscle memory and long-term skills.
2️⃣ Read Other People’s Code
Explore GitHub repos or open-source projects to learn new patterns.
3️⃣ Write Clean, Readable Code
Use meaningful names, proper indentation, and comments.
4️⃣ Review and Refactor
Don’t just finish—improve. Refactor messy code for better logic and performance.
5️⃣ Practice DSA Regularly
Solve at least 1-2 problems a day on LeetCode or HackerRank.
6️⃣ Use Git from Day One
Commit often. It builds discipline and version control skills.
7️⃣ Learn One New Concept Weekly
Could be OOP, error handling, regex, or a new library.
8️⃣ Build Small Projects
Apply what you learn in mini real-world apps—no better way to reinforce skills.
9️⃣ Keep a Code Journal
Write what you learned daily. Great for review and portfolio building.
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| 2 |  𝗙𝗥𝗘𝗘 𝗥𝗲𝘀𝗼𝘂𝗿𝗰𝗲𝘀 𝗧𝗼 𝗟𝗲𝗮𝗿𝗻 𝗔𝗜 𝗶𝗻 𝟮𝟬𝟮𝟲🚀
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📢 Share this valuable opportunity with your friends and classmates! | 897 |
| 3 | Here’s a DSA problem-solving cheat sheet that will help you solve 90–95% of questions that come your way.
♦ If the input is an array or string:
• Is the array sorted?
– Yes: Use Binary Search or Two Pointers.
– No: Move to the next checks.
• What is the question asking?
– Number of ways to do something / Max-Min of something:
▪ If decisions are dependent on each other, use Dynamic Programming.
▪ If decisions are independent, use Greedy.
– Is something possible?
▪ Try Backtracking.
• Does it involve string manipulation?
– Prefix matching: Use Trie.
– Building strings or finding distances: Use Stack or Monotonic Stack.
• Is it about finding a specific element?
– Use a Hash Map or Set.
• Does it involve elements being added/removed in a sliding window fashion?
– Use a Sliding Window or Counting Hash Map.
• Is the problem about continuously finding the max/min element or removing them?
– Use a Heap or Monotonic Queue.
♦ If the input is a graph:
• Does the question involve finding the shortest path or the fewest steps?
– Yes: Use Breadth-First Search (BFS).
– No: Use Depth-First Search (DFS).
♦ If the input is a tree (probably binary):
• Does the question involve specific depths/levels?
– Yes: Use Breadth-First Search (BFS).
– No: Use Depth-First Search (DFS).
♦ If the input is a linked list:
• Does it involve detecting cycles?
– Use Fast and Slow Pointers.
• Does it involve reversing or modifications?
– Use a prev pointer for reversing.
– Use a dummy pointer for maintaining the original head.
This flow will help you quickly identify the optimal approach for most DSA problems.
React ❤️ for more | 935 |
| 4 |  🎓 𝗛𝗔𝗥𝗩𝗔𝗥𝗗 𝗨𝗡𝗜𝗩𝗘𝗥𝗦𝗜𝗧𝗬 𝗙𝗥𝗘𝗘 𝗢𝗡𝗟𝗜𝗡𝗘 𝗖𝗢𝗨𝗥𝗦𝗘𝗦 😍
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| 5 | Top 21 skills to learn this year 👇
1. Artificial Intelligence and Machine Learning: Understanding AI algorithms and applications.
2. Data Science: Proficiency in tools like Python/ R, Jupyter Notebook, and GitHub, with the ability to apply data science algorithms to solve real-world problems.
3. Cybersecurity: Protecting data and systems from cyber threats.
4. Cloud Computing: Proficiency in platforms like AWS, Azure, and Google Cloud.
5. Blockchain Technology: Understanding blockchain architecture and applications beyond cryptocurrencies.
6. Digital Marketing: Expertise in SEO, social media, and online advertising.
7. Programming: Skills in languages such as Python, JavaScript, and Go.
8. UX/UI Design: Creating intuitive and effective user interfaces and experiences.
9. Consulting: Expertise in providing strategic advice, improving business processes, and implementing solutions to drive business growth.
10. Data Analysis and Visualization: Proficiency in tools like Excel, SQL, Tableau, and Power BI to analyze and present data effectively.
11. Business Analysis & Project Management: Using tools and methodologies like Agile and Scrum.
12. Remote Work Tools: Proficiency in tools for remote collaboration and productivity.
13. Financial Literacy: Understanding personal finance, investment, and cryptocurrencies.
14. Emotional Intelligence: Skills in empathy, communication, and relationship management.
15. Business Acumen: A deep understanding of how businesses operate, including strategic thinking, market analysis, and financial literacy.
16. Investment Banking: Knowledge of financial markets, valuation methods, mergers and acquisitions, and financial modeling.
17. Mobile App Development: Skills in developing apps for iOS and Android using Swift, Kotlin, or React Native.
18. Financial Management: Proficiency in financial planning, analysis, and tools like QuickBooks and SAP.
19. Web Development: Proficiency in front-end and back-end development using HTML, CSS, JavaScript, and frameworks like React, Angular, and Node.js.
20. Data Engineering: Skills in designing, building, and maintaining data pipelines and architectures using tools like Hadoop, Spark, and Kafka.
21. Soft Skills: Improving leadership, teamwork, and adaptability skills.
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| 6 |  𝗟𝗲𝘃𝗲𝗹 𝗨𝗽 𝗬𝗼𝘂𝗿 𝗦𝗸𝗶𝗹𝗹𝘀 𝘄𝗶𝘁𝗵 𝗧𝗵𝗲𝘀𝗲 𝗚𝗮𝗺𝗲-𝗖𝗵𝗮𝗻𝗴𝗶𝗻𝗴 𝗖𝗼𝘂𝗿𝘀𝗲𝘀!
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Save this post and share with your friends | 791 |
| 7 | Deployment and Real-World Practice
91. What is model deployment?
92. What is batch vs real-time prediction?
93. What is model drift?
94. How do you monitor model performance?
95. What is feature store?
96. What is experiment tracking?
97. How do you explain model predictions?
98. What is data versioning?
99. How do you handle failed models?
100. How do you communicate results to non-technical stakeholders?
Double Tap ♥️ For Detailed Answers | 755 |
| 8 | Top 100 Data Science Interview Questions ✅
Data Science Basics
1. What is data science and how is it different from data analytics?
2. What are the key steps in a data science lifecycle?
3. What types of problems does data science solve?
4. What skills does a data scientist need in real projects?
5. What is the difference between structured and unstructured data?
6. What is exploratory data analysis and why do you do it first?
7. What are common data sources in real companies?
8. What is feature engineering?
9. What is the difference between supervised and unsupervised learning?
10. What is bias in data and how does it affect models?
Statistics and Probability
11. What is the difference between mean, median, and mode?
12. What is standard deviation and variance?
13. What is probability distribution?
14. What is normal distribution and where is it used?
15. What is skewness and kurtosis?
16. What is correlation vs causation?
17. What is hypothesis testing?
18. What are Type I and Type II errors?
19. What is p-value?
20. What is confidence interval?
Data Cleaning and Preprocessing
21. How do you handle missing values?
22. How do you treat outliers?
23. What is data normalization and standardization?
24. When do you use Min-Max scaling vs Z-score?
25. How do you handle imbalanced datasets?
26. What is one-hot encoding?
27. What is label encoding?
28. How do you detect data leakage?
29. What is duplicate data and how do you handle it?
30. How do you validate data quality?
Python for Data Science
31. Why is Python popular in data science?
32. Difference between list, tuple, set, and dictionary?
33. What is NumPy and why is it fast?
34. What is Pandas and where do you use it?
35. Difference between loc and iloc?
36. What are vectorized operations?
37. What is lambda function?
38. What is list comprehension?
39. How do you handle large datasets in Python?
40. What are common Python libraries used in data science?
Data Visualization
41. Why is data visualization important?
42. Difference between bar chart and histogram?
43. When do you use box plots?
44. What does a scatter plot show?
45. What are common mistakes in data visualization?
46. Difference between Seaborn and Matplotlib?
47. What is a heatmap used for?
48. How do you visualize distributions?
49. What is dashboarding?
50. How do you choose the right chart?
Machine Learning Basics
51. What is machine learning?
52. Difference between regression and classification?
53. What is overfitting and underfitting?
54. What is train-test split?
55. What is cross-validation?
56. What is bias-variance tradeoff?
57. What is feature selection?
58. What is model evaluation?
59. What is baseline model?
60. How do you choose a model?
Supervised Learning
61. How does linear regression work?
62. Assumptions of linear regression?
63. What is logistic regression?
64. What is decision tree?
65. What is random forest?
66. What is KNN and when do you use it?
67. What is SVM?
68. How does Naive Bayes work?
69. What are ensemble methods?
70. How do you tune hyperparameters?
Unsupervised Learning
71. What is clustering?
72. Difference between K-means and hierarchical clustering?
73. How do you choose value of K?
74. What is PCA?
75. Why is dimensionality reduction needed?
76. What is anomaly detection?
77. What is association rule mining?
78. What is DBSCAN?
79. What is cosine similarity?
80. Where is unsupervised learning used?
Model Evaluation Metrics
81. What is accuracy and when is it misleading?
82. What is precision and recall?
83. What is F1 score?
84. What is ROC curve?
85. What is AUC?
86. Difference between confusion matrix metrics?
87. What is log loss?
88. What is RMSE?
89. What metric do you use for imbalanced data?
90. How do business metrics link to ML metrics? | 685 |
| 9 |  🚀 𝗚𝗼𝗼𝗴𝗹𝗲 𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗲𝘀 𝗶𝗻 𝗗𝗮𝘁𝗮 𝗔𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝘀 & 𝗔𝗜! 📊
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https://pdlink.in/4htgIEW
📌 Save this post and share it with someone interested in Data Analytics or AI! | 696 |
| 10 | 💻 100 Days Coding Roadmap 🚀👨💻
📍 Days 1–10: Programming Basics
– Choose a language: Python / JavaScript / C++
– Learn syntax, variables, loops, conditionals
– Write basic programs & challenges
📍 Days 11–20: Data Structures
– Arrays, Lists, Stacks, Queues
– Practice using built-in methods
– Start solving problems on LeetCode or Codeforces
📍 Days 21–30: Algorithms Fundamentals
– Sorting: Bubble, Merge, Quick
– Searching: Binary, Linear
– Time & space complexity (Big O notation)
📍 Days 31–40: Object-Oriented Programming
– Classes, Objects, Inheritance, Polymorphism
– Apply OOP to build small real-world projects
📍 Days 41–50: Intermediate DSA
– HashMaps, Sets, Linked Lists
– Recursion, Backtracking basics
– Solve 50+ problems for logic building
📍 Days 51–60: Advanced DSA
– Trees, Graphs, Heaps, Tries
– Dynamic Programming intro
– Participate in contests (CodeChef, HackerRank)
📍 Days 61–70: Web Basics (HTML/CSS/JS)
– Build portfolio website
– Learn responsive design
– DOM manipulation with JavaScript
📍 Days 71–80: Backend + APIs
– Learn Node.js / Django / Flask
– Create REST APIs, connect with frontend
– Use databases like MongoDB / MySQL
📍 Days 81–90: Projects & GitHub
– Build 2–3 full-stack apps
– Use Git, GitHub, README files
– Deploy apps (Netlify, Vercel, Render)
📍 Days 91–100: Interview & Capstone
– Revise top 100 DSA patterns
– Mock interviews, resume prep
– Complete one big project and publish it
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| 11 |  🚀 𝐁𝐞𝐜𝐨𝐦𝐞 𝐚𝐧 𝐀𝐈 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫 𝐢𝐧 𝟐𝟎𝟐𝟔
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⚡ AI is creating new career opportunities—start building the skills companies need in 2026! | 1 050 |
| 12 | 10 Most Popular GitHub Repositories for Learning AI
1️⃣ microsoft/generative-ai-for-beginners
A beginner-friendly 21-lesson course by Microsoft that teaches how to build real generative AI apps—from prompts to RAG, agents, and deployment.
2️⃣ rasbt/LLMs-from-scratch
Learn how LLMs actually work by building a GPT-style model step by step in pure PyTorch—ideal for deeply understanding LLM internals.
3️⃣ DataTalksClub/llm-zoomcamp
A free 10-week, hands-on course focused on production-ready LLM applications, especially RAG systems built over your own data.
4️⃣ Shubhamsaboo/awesome-llm-apps
A curated collection of real, runnable LLM applications showcasing agents, RAG pipelines, voice AI, and modern agentic patterns.
5️⃣ panaversity/learn-agentic-ai
A practical program for designing and scaling cloud-native, production-grade agentic AI systems using Kubernetes, Dapr, and multi-agent workflows.
6️⃣ dair-ai/Mathematics-for-ML
A carefully curated library of books, lectures, and papers to master the mathematical foundations behind machine learning and deep learning.
7️⃣ ashishpatel26/500-AI-ML-DL-Projects-with-code
A massive collection of 500+ AI project ideas with code across computer vision, NLP, healthcare, recommender systems, and real-world ML use cases.
8️⃣ armankhondker/awesome-ai-ml-resources
A clear 2025 roadmap that guides learners from beginner to advanced AI with curated resources and career-focused direction.
9️⃣ spmallick/learnopencv
One of the best hands-on repositories for computer vision, covering OpenCV, YOLO, diffusion models, robotics, and edge AI.
🔟 x1xhlol/system-prompts-and-models-of-ai-tools
A deep dive into how real AI tools are built, featuring 30K+ lines of system prompts, agent designs, and production-level AI patterns. | 1 081 |
| 13 |  🚀 𝗧𝗼𝗽 𝟳 𝗙𝗥𝗘𝗘 𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 𝗖𝗼𝘂𝗿𝘀𝗲𝘀 𝘁𝗼 𝗟𝗲𝗮𝗿𝗻 𝗗𝗮𝘁𝗮 𝗔𝗻𝗮𝗹𝘆𝘁𝗶𝗰𝘀! 📊
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| 14 |  🎓 𝗦𝘁𝗮𝗻𝗳𝗼𝗿𝗱 𝗨𝗻𝗶𝘃𝗲𝗿𝘀𝗶𝘁𝘆 𝗙𝗥𝗘𝗘 𝗢𝗻𝗹𝗶𝗻𝗲 𝗖𝗼𝘂𝗿𝘀𝗲𝘀! 🚀
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| 15 |  𝗙𝗥𝗘𝗘 𝗔𝗜 𝗖𝗮𝗿𝗲𝗲𝗿 𝗠𝗮𝘀𝘁𝗲𝗿𝗰𝗹𝗮𝘀𝘀 🚀
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| 16 | ✅ Top 50 Python Interview Questions
1. What are Python’s key features?
2. Difference between list, tuple, and set
3. What is PEP8? Why is it important?
4. What are Python data types?
5. Mutable vs Immutable objects
6. What is list comprehension?
7. Difference between is and ==
8. What are Python decorators?
9. Explain *args and **kwargs
10. What is a lambda function?
11. Difference between deep copy and shallow copy
12. How does Python memory management work?
13. What is a generator?
14. Difference between iterable and iterator
15. How does with statement work?
16. What is a context manager?
17. What is _init_.py used for?
18. Explain Python modules and packages
19. What is _name_ == "_main_"?
20. What are Python namespaces?
21. Explain Python’s GIL (Global Interpreter Lock)
22. Multithreading vs multiprocessing in Python
23. What are Python exceptions?
24. Difference between try-except and assert
25. How to handle file operations?
26. What is the difference between @staticmethod and @classmethod?
27. How to implement a stack or queue in Python?
28. What is duck typing in Python?
29. Explain method overloading and overriding
30. What is the difference between Python 2 and Python 3?
31. What are Python’s built-in data structures?
32. Explain the difference between sort() and sorted()
33. What is a Python dictionary and how does it work?
34. What are sets and frozensets?
35. Use of enumerate() function
36. What are Python itertools?
37. What is a Python virtual environment?
38. How do you install packages in Python?
39. What is pip?
40. How to connect Python to a database?
41. Explain regular expressions in Python
42. How does Python handle memory leaks?
43. What are Python’s built-in functions?
44. Use of map(), filter(), reduce()
45. How to handle JSON in Python?
46. What are data classes?
47. What are f-strings and how are they useful?
48. Difference between global, nonlocal, and local variables
49. Explain unit testing in Python
50. How would you debug a Python application?
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| 17 |  🚀 𝗧𝗼𝗽 𝗜𝗻-𝗗𝗲𝗺𝗮𝗻𝗱 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 𝘁𝗼 𝗠𝗮𝘀𝘁𝗲𝗿 𝗶𝗻 𝟮𝟬𝟮𝟲
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| 18 | Sure! Here’s the text with the asterisks replaced by double asterisks:
💻 Top Coding Languages for Beginners & Their Uses 🌟🚀
🔹 Python — Easy syntax, great for AI, web, and data
🔹 JavaScript — Web interactivity and frontend magic
🔹 Java — Enterprise apps and Android development
🔹 HTML/CSS — Website structure & styling basics
🔹 Scratch — Visual coding for kids & newbies
🔹 SQL — Managing and querying databases
🔹 C# — Game dev with Unity and Windows apps
🔹 Ruby — Simple web app building with Rails
🔹 Swift — Making apps for Apple devices
🔹 PHP — Server-side scripting for websites
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| 20 | ✅ Top Tools Every Programmer Should Know ⚙️💻
1️⃣ Code Editors & IDEs
Your main workspace
• VS Code: Lightweight, fast, with tons of extensions
• PyCharm: Great for Python projects
• IntelliJ IDEA: Popular for Java and enterprise apps
2️⃣ Version Control
Track changes and collaborate
• Git: Most used version control tool
• GitHub / GitLab / Bitbucket: Host and manage code repositories
3️⃣ Terminal & Shell Tools
Automate tasks and run commands
• Bash / Zsh: Command-line shells
• Oh My Zsh: Plugin system for Zsh with themes
• tmux: Split terminal screens and keep sessions running
4️⃣ Package Managers
Install libraries and tools
• npm / yarn: JavaScript
• pip: Python
• Homebrew: macOS tool installer
• apt / yum: Linux package managers
5️⃣ Debugging Tools
Find and fix bugs
• Chrome DevTools: Debug front-end apps
•
PDB (Python), GDB (C/C++): Language
-specific debuggers
•
Postman: Test APIs quickly
6️⃣ Compilers & Runtimes
Convert code to executable programs
• GCC / Clang: C/C++ compilers
• JVM: Runs Java programs
• Node.js: Runs JavaScript outside the browser
7️⃣ Build Tools
Automate building projects
• Webpack: JavaScript bundler
• Make / CMake: C/C++ builds
• Gradle / Maven: Java builds
8️⃣ Linters & Formatters
Clean, consistent code
• ESLint (JavaScript), Flake8 / Black (Python)
• Prettier: Auto-formats code
9️⃣ API & Backend Testing
Check if APIs work correctly
• Postman: Make requests, test endpoints
• Insomnia: Alternative to Postman
🔟 Cloud & DevOps Tools
Deploy apps and manage infra
• Docker: Containerize applications
• Kubernetes: Orchestrate containers
• GitHub Actions / Jenkins: Automate workflows
🔁 Bonus Tools
• Figma: For UI/UX preview and handoff
• Notion / Obsidian: Note-taking and documentation
• Regex101: Test and debug regular expressions
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