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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โœ… Top YouTube Channels to Learn Coding ๐Ÿ“บ๐Ÿ’ป

1๏ธโƒฃ freeCodeCamp.org
โ€“ Full courses on Python, JavaScript, web dev, and data science
โ€“ No ads, no fluff โ€“ just solid content

2๏ธโƒฃ Apna College
โ€“ Great for beginners in C++, DSA, web dev
โ€“ Taught in Hinglish (English + Hindi)

3๏ธโƒฃ Tech With Tim
โ€“ Python tutorials, projects, and game dev with Pygame
โ€“ Covers beginner to intermediate topics

4๏ธโƒฃ The Net Ninja
โ€“ Modern web development (React, Node.js, Firebase)
โ€“ Clean playlists and short, easy-to-follow videos

5๏ธโƒฃ CodeWithHarry
โ€“ Hindi tutorials for web dev, Python, Java, C++
โ€“ Beginner-friendly and practical

6๏ธโƒฃ Traversy Media
โ€“ Covers web technologies, APIs, crash courses
โ€“ Ideal for frontend & backend devs

7๏ธโƒฃ CS50 by Harvard (David Malan)
โ€“ World-famous computer science course
โ€“ Deep programming foundations

8๏ธโƒฃ Programming with Mosh
โ€“ High-quality tutorials on Python, React, Node, etc.
โ€“ Great explanations with visuals

9๏ธโƒฃ Anuj Bhaiya
โ€“ DSA, system design, placement help
โ€“ College-friendly Hindi content

๐Ÿ”Ÿ Fireship
โ€“ Fast-paced dev content in under 100 seconds
โ€“ Great for exploring trending tech/tools

๐Ÿ’ฌ Tap โค๏ธ for more!
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Developers who grow fast in tech tend to combine strong thinking habits with consistent practice and learning routines. These habits compound over time and turn average effort into outsized career progress.

โœ Core thinking habits

โฆ Ask โ€œwhyโ€ before โ€œhowโ€ to understand trade-offs, not just syntax or steps.
โฆ Break big tasks into smaller pieces (input, process, output, edge cases) instead of jumping straight into code.
โฆ Write down approach or pseudocode first so you debug logic, not just syntax.

โœ Learning and experimentation

โฆ Treat learning as a daily routine: small coding sessions, experiments, or reading, even 30โ€“60 minutes a day.
โฆ Stay curious about tools, frameworks, and patterns outside your current stack to avoid getting boxed in.
โฆ Use docs, official guides, and community threads as first-class learning sources, not just copyโ€“paste fixes.

โœ Code quality and best practices

โฆ Write DRY, modular, and testable code so features are easier to change and debug later.
โฆ Read othersโ€™ code (PRs, open source, senior teammates) to pick up naming, structure, and patterns.
โฆ Add small tests and logs early to catch issues fast instead of relying only on manual clicking.

โœ Feedback, failure, and growth

โฆ Ship early, accept bugs as feedback, and fix quickly instead of hiding unfinished work.
โฆ Ask for code reviews and genuinely act on feedback rather than defending every decision.
โฆ Keep a simple โ€œlearning logโ€ of mistakes, insights, and patterns so lessons arenโ€™t forgotten.

โœ Communication and teaching

โฆ Explain your approach simply in standups, comments, or design docs; clear thinking shows in clear communication.
โฆ Teach what you know via mentoring, posts, or short demosโ€”explaining forces you to close gaps in understanding.
โฆ Stay plugged into blogs, talks, and communities to see how others solve real-world problems.
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โœ… DSA Roadmap for Coding Interviews ๐Ÿง ๐Ÿ’ป

1๏ธโƒฃ Start with the Basics
โ€“ Learn Time & Space Complexity
โ€“ Understand Big O notation

2๏ธโƒฃ Master Arrays & Strings
โ€“ Sliding window, Two pointers, Prefix sum
โ€“ Practice problems like: Two Sum, Move Zeroes

3๏ธโƒฃ Dive into Hashing
โ€“ Use HashMap/HashSet for fast lookups
โ€“ Problems: Longest Substring Without Repeat, Group Anagrams

4๏ธโƒฃ Linked Lists
โ€“ Learn traversal, reversal, cycle detection
โ€“ Key problems: Detect Cycle, Merge Two Sorted Lists

5๏ธโƒฃ Stacks & Queues
โ€“ Infix to postfix, parentheses validation, monotonic stack
โ€“ Problems: Valid Parentheses, Next Greater Element

6๏ธโƒฃ Recursion & Backtracking
โ€“ Subsets, Permutations, N-Queens
โ€“ Key skill: build solution tree and backtrack correctly

7๏ธโƒฃ Binary Search & Search Problems
โ€“ Classic problems: Search in Rotated Array, Koko Eating Bananas
โ€“ Understand upper/lower bounds

8๏ธโƒฃ Trees & Binary Trees
โ€“ DFS, BFS, Inorder/Preorder/Postorder
โ€“ Problems: Lowest Common Ancestor, Diameter of Tree

9๏ธโƒฃ Heaps & Priority Queues
โ€“ Top K elements, Min/Max heap use cases

๐Ÿ”Ÿ Graphs
โ€“ BFS, DFS, Union-Find, Dijkstraโ€™s
โ€“ Practice shortest path, connected components, cycle detection

1๏ธโƒฃ1๏ธโƒฃ Dynamic Programming (DP)
โ€“ Start with 1D DP (Fibonacci, Climbing Stairs)
โ€“ Move to 2D DP (Knapsack, LCS, Grid Paths)

๐Ÿ’ก Tip: Practice on LeetCode, Codeforces, GFG. Use patterns, not memorization.

๐Ÿ’ฌ Tap โค๏ธ for more!
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Every job interview has a "Do you have any questions?" part at the end.

But almost every candidate says "No questions from me" or doesn't ask good ones.

Here are 5 interview questions that you can ask to stand out and land offers:

1. I saw you did (XYZ) before joining
(COMPANY). What's your "why", and why did you decide to pursue a career here?

This question takes the interviewer out of the "interviewing" mindset and let's them talk more about their own journey. You can then mention how you relate to their journey, which creates empathy and a stronger connection with the interviewer.

2. If you looked back on this role a year later, what outcomes would indicate that this hire was successful?

This question allows you to see what they're looking for someone to accomplish in the role, and you can then answer their answer by showcasing how you'd do your best to achieve those outcomes.

3. What is the vision of the team in the next 6-12 months, and how would I contribute to having that vision come to life?

This question shows that you're forward-thinking and "in it to win it". You're also getting a deeper understanding of the goals your team has and how you'll play a part in achieving them.

4. What do you believe is the most important skill someone must have in this position?

This question allows you to identify the skill the interviewer wants to see in the candidate, and then you can turn the question back on them and share why you have that skills from your experiences.

5. What are next steps in the interview process, and when should I be hearing back?

This question gives you a timeline of how the interview process will go (if not shared already) and when you should follow-up if you don't hear back from the interviewer.
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๐Ÿ’ฐ Want to Build an App That Makes Money? Read This ๐Ÿš€

Forget innovation. Focus on profit. Here's the strategy to build apps that actually earn:

๐Ÿ”ฅ 4 Proven App Ideas That Work:
1. Solve a tiny, ignored problem.
2. Solve a big, common problem (even in crowded markets).
3. Use the โ€œX for Yโ€ formula (e.g., โ€œTinder for pet adoptionโ€).
4. Build AI-powered tools using GPT models.

๐ŸŽฏ Follow the SLC Rule:
โ€ข Simple: 1โ€“2 core features.
โ€ข Lovable: Great UI/UX (design matters!).
โ€ข Complete: Fully functional, not half-baked.

๐Ÿ› ๏ธ Recommended Tech Stack:
โ€ข Frontend: Next.js + Shadcn UI + Tailwind CSS
โ€ข Backend: Supabase
โ€ข Analytics: PostHog
โ€ข Payments: Stripe

โšก Use AI to Build Faster:
Tools like Bolt, V0, Cursor, and Lovable can generate code, UI, and workflows in minutes.

๐Ÿ“… 1-Week App Launch Plan:
1. Outline with ChatGPT
2. Generate starter code with AI
3. Design with Mobbin/ Pageflows
4. Customize ship it!

๐Ÿ“ข Marketing = Non-Negotiable:
โ€ข Be loud on Reddit, WhatsApp, Twitter, LinkedIn, TikTok, YouTube, Instagram or Telegram
โ€ข Use SEO metadata
โ€ข Start organic, then scale with ads

๐Ÿ’ผ Mindset Shift: Code like a founder. Think users, revenue, and growthโ€”not just features.

๐Ÿ“Œ Double Tap โ™ฅ๏ธ For More
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Data Structures Notes ๐Ÿ“
๐Ÿ‘4โค1
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๐’๐๐‹ ๐‚๐š๐ฌ๐ž ๐’๐ญ๐ฎ๐๐ข๐ž๐ฌ ๐Ÿ๐จ๐ซ ๐ˆ๐ง๐ญ๐ž๐ซ๐ฏ๐ข๐ž๐ฐ:

Join for more: https://t.me/sqlanalyst

1. Dannyโ€™s Diner:
Restaurant analytics to understand the customer orders pattern.
Link: https://8weeksqlchallenge.com/case-study-1/

2. Pizza Runner
Pizza shop analytics to optimize the efficiency of the operation
Link: https://8weeksqlchallenge.com/case-study-2/

3. Foodie Fie
Subscription-based food content platform
Link: https://lnkd.in/gzB39qAT

4. Data Bank: Thatโ€™s money
Analytics based on customer activities with the digital bank
Link: https://lnkd.in/gH8pKPyv

5. Data Mart: Fresh is Best
Analytics on Online supermarket
Link: https://lnkd.in/gC5bkcDf

6. Clique Bait: Attention capturing
Analytics on the seafood industry
Link: https://lnkd.in/ggP4JiYG

7. Balanced Tree: Clothing Company
Analytics on the sales performance of clothing store
Link: https://8weeksqlchallenge.com/case-study-7

8. Fresh segments: Extract maximum value
Analytics on online advertising
Link: https://8weeksqlchallenge.com/case-study-8
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