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.

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๐Ÿš€ ๐—Ÿ๐—ฒ๐˜ƒ๐—ฒ๐—น ๐—จ๐—ฝ ๐—ฌ๐—ผ๐˜‚๐—ฟ ๐—–๐—ฎ๐—ฟ๐—ฒ๐—ฒ๐—ฟ ๐˜„๐—ถ๐˜๐—ต ๐—™๐—ฅ๐—˜๐—˜ ๐— ๐—ถ๐—ฐ๐—ฟ๐—ผ๐˜€๐—ผ๐—ณ๐˜ ๐—Ÿ๐—ฒ๐—ฎ๐—ฟ๐—ป๐—ถ๐—ป๐—ด! ๐Ÿ’ป

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๐Ÿ’ป Infosys :- https://pdlink.in/4eBH3Aa

โšก IBM :- https://pdlink.in/45KgqDR

๐Ÿ’ซ Amazon :- https://pdlink.in/47XuBGz

๐ŸŒ Cisco :- https://pdlink.in/4gaeVVV

๐ŸชŸ Microsoft :- https://pdlink.in/4zhGTX6

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๐Ÿš€ ๐——๐—ฟ๐—ฒ๐—ฎ๐—บ๐—ถ๐—ป๐—ด ๐—ผ๐—ณ ๐—ช๐—ผ๐—ฟ๐—ธ๐—ถ๐—ป๐—ด ๐—ฎ๐˜ ๐—ง๐—ผ๐—ฝ ๐—ง๐—ฒ๐—ฐ๐—ต ๐—–๐—ผ๐—บ๐—ฝ๐—ฎ๐—ป๐—ถ๐—ฒ๐˜€? ๐Ÿ’ป๐Ÿ”ฅ

Hereโ€™s a collection of company-specific resources to help you understand their interview and hiring processes.

๐ŸŽฏ Interview Preparation Guides For:

๐ŸŸ  Amazon โ€“ Interviewing Guide
๐Ÿ”ต Google โ€“ Interview Tips
๐ŸชŸ Microsoft โ€“ Hiring & Interview Tips
๐ŸŸข NVIDIA โ€“ Hiring Process
๐Ÿ”ท Meta โ€“ Software Engineering Interview Prep

๐‹๐ข๐ง๐ค ๐Ÿ‘‡:-

https://pdlink.in/4i6HkgN

๐Ÿ“ข Save & share this with your friends โ€” start learning for FREE!
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๐Ÿš€ Top 200 Coding Interview Questions

๐Ÿง  1. Programming Fundamentals

1. What is programming?

2. What is an algorithm?

3. What is pseudocode?

4. What is a flowchart?

5. What is a variable?

6. What are data types?

7. What is type casting?

8. What are operators in programming?

9. What are conditional statements?

10. What are loops?

11. Difference between for, while, and do-while loops?

12. What are functions?

13. Difference between parameters and arguments?

14. What is recursion?

15. What is scope?

16. What are global and local variables?

17. What are arrays?

18. What are strings?

19. What is debugging?

20. What are syntax, logical, and runtime errors?

โš™๏ธ 2. Object-Oriented Programming

1. What is Object-Oriented Programming OOP?

2. What is a class?

3. What is an object?

4. What is encapsulation?

5. What is abstraction?

6. What is inheritance?

7. What is polymorphism?

8. What is method overloading?

9. What is method overriding?

10. Difference between overloading and overriding?

11. What is a constructor?

12. Types of constructors?

13. What is destructor?

14. What is static keyword?

15. What is final keyword?

16. What is interface?

17. What is abstract class?

18. Difference between interface and abstract class?

19. What is object cloning?

20. What are access modifiers?

๐Ÿ“Š 3. Data Structures

1. What is a data structure?

2. Types of data structures?

3. What is an array?

4. What is a linked list?

5. Types of linked lists?

6. What is a stack?

7. What is a queue?

8. Difference between stack and queue?

9. What is a deque?

10. What is a priority queue?

11. What is a hash table?

12. What is hashing?

13. What are collisions in hashing?

14. What is a binary tree?

15. What is a binary search tree?

16. What is AVL tree?

17. What is heap?

18. Min Heap vs Max Heap?

19. What is a graph?

20. Types of graphs?

21. What is graph traversal?

22. BFS vs DFS?

23. What is a trie?

24. What is a segment tree?

25. What is Fenwick tree?

26. What is disjoint set Union-Find?

27. What is adjacency matrix?

28. What is adjacency list?

29. What is a circular linked list?

30. What is doubly linked list?

31. What is a sparse matrix?

32. What is dynamic array?

33. What is load factor?

34. What is collision resolution?

35. Linear probing vs chaining?

36. What is tree traversal?

37. Preorder vs Inorder vs Postorder?

38. What is level-order traversal?

39. What is recursion stack?

40. Time complexity of common data structures?

๐Ÿš€ 4. Algorithms

1. What is an algorithm?

2. What is time complexity?

3. What is space complexity?

4. What is Big O notation?

5. What is Big Theta notation?

6. What is Big Omega notation?

7. What is binary search?

8. What is linear search?

9. Difference between linear and binary search?

10. What is merge sort?

11. What is quick sort?

12. What is bubble sort?

13. What is insertion sort?

14. What is selection sort?

15. What is heap sort?

16. What is counting sort?

17. What is radix sort?

18. What is divide and conquer?

19. What is greedy algorithm?

20. What is dynamic programming?

21. What is memoization?

22. What is tabulation?

23. What is backtracking?

24. What is branch and bound?

25. What is recursion?

26. What is tail recursion?

27. What is sliding window?

28. What is two pointers technique?
โค1
29. What is prefix sum?

30. What is binary lifting?

31. What is topological sorting?

32. What is Dijkstra's algorithm?

33. What is Bellman-Ford algorithm?

34. What is Floyd-Warshall algorithm?

35. What is Kruskal's algorithm?

36. What is Prim's algorithm?

37. What is Kadane's algorithm?

38. What is KMP algorithm?

39. What is Rabin-Karp algorithm?

40. What is Huffman coding?

๐Ÿ’ป 5. Programming Languages

1. What is C?

2. What is C++?

3. What is Java?

4. What is Python?

5. What is JavaScript?

6. Difference between compiled and interpreted languages?

7. What is garbage collection?

8. What is memory management?

9. What is pointer?

10. What is reference?

11. Pointer vs Reference?

12. What is exception handling?

13. What is multithreading?

14. What is concurrency?

15. What is synchronization?

16. What is deadlock?

17. What is race condition?

18. What is lambda function?

19. What are generics?

20. What is iterator?

21. What is collection framework?

22. What is immutable object?

23. What is mutable object?

24. What is package/module?

25. What is namespace?

๐Ÿ—„๏ธ 6. Database & SQL

1. What is a database?

2. What is SQL?

3. Difference between SQL and NoSQL?

4. What is normalization?

5. What is denormalization?

6. What is a primary key?

7. What is a foreign key?

8. What are joins?

9. Difference between INNER JOIN and LEFT JOIN?

10. What is indexing?

11. What is a transaction?

12. What are ACID properties?

13. What is a view?

14. What is a stored procedure?

15. What is a trigger?

16. What is aggregate function?

17. What is GROUP BY?

18. What is HAVING clause?

19. Difference between DELETE, DROP, and TRUNCATE?

20. What is database optimization?

๐ŸŒ 7. System Design & CS Fundamentals

1. What is an operating system?

2. What is a process?

3. What is a thread?

4. Process vs Thread?

5. What is CPU scheduling?

6. What is virtual memory?

7. What is paging?

8. What is caching?

9. What is load balancing?

10. What is client-server architecture?

11. What is REST API?

12. What is HTTP?

13. What is HTTPS?

14. What is DNS?

15. What is CDN?

๐ŸŽฏ 8. Coding Interview Scenarios

1. Reverse a string.

2. Find the largest element in an array.

3. Find the second largest element.

4. Check whether a string is a palindrome.

5. Find duplicate elements in an array.

6. Remove duplicates from an array.

7. Find the missing number in an array.

8. Merge two sorted arrays.

9. Check if two strings are anagrams.

10. Find the first non-repeating character.

๐Ÿ† 9. Advanced Coding Problems

1. Solve the Two Sum problem.

2. Solve the Longest Substring Without Repeating Characters problem.

3. Solve the Longest Common Subsequence problem.

4. Solve the Longest Increasing Subsequence problem.

5. Solve the Maximum Subarray Sum problem.

6. Solve the Merge Intervals problem.

7. Solve the Trapping Rain Water problem.

8. Solve the Median of Two Sorted Arrays problem.

9. Solve the LRU Cache problem.

10. Design a URL Shortener.

๐Ÿ”ฅ Double Tap โค๏ธ For Detailed Answers
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๐Ÿ”ฅ ๐— ๐—ฎ๐˜€๐˜๐—ฒ๐—ฟ ๐—ฆ๐—ค๐—Ÿ ๐—ณ๐—ผ๐—ฟ ๐—™๐—ฅ๐—˜๐—˜ โ€” ๐—™๐—ฟ๐—ผ๐—บ ๐—•๐—ฒ๐—ด๐—ถ๐—ป๐—ป๐—ฒ๐—ฟ ๐˜๐—ผ ๐—”๐—ฑ๐˜ƒ๐—ฎ๐—ป๐—ฐ๐—ฒ๐—ฑ! ๐Ÿ’ป๐Ÿ“Š

These free learning resources cover everything from database fundamentals to advanced SQL queries, with opportunities to practice real-world problems.

๐ŸŽฏ Top FREE SQL Resources:
1๏ธโƒฃ Introduction to Databases & SQL โ€” Udemy
2๏ธโƒฃ Advanced Database & SQL โ€” Udemy
3๏ธโƒฃ Learn SQL โ€” Codecademy
4๏ธโƒฃ SQL Tutorial โ€” SQLZoo

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โšก Take the first step toward your dream tech career today!
๐Ÿš€ ๐—™๐—ฅ๐—˜๐—˜ ๐—–๐—ฒ๐—ฟ๐˜๐—ถ๐—ณ๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ ๐—ข๐—ป ๐—”๐˜‡๐˜‚๐—ฟ๐—ฒ ๐— ๐—ฎ๐—ฐ๐—ต๐—ถ๐—ป๐—ฒ ๐—Ÿ๐—ฒ๐—ฎ๐—ฟ๐—ป๐—ถ๐—ป๐—ด โ˜๏ธ

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๐ŸŽ“ Perfect for Students โ€ข Freshers โ€ข Data Science Aspirants โ€ข AI/ML Learners โ€ข Working Professionals
โœ… 10 Useful Python Interview Code Snippets ๐Ÿ๐Ÿ’ผ

1. Reverse a string:

s = "hello"
print(s[::-1]) # Output: 'olleh'


2. Check for a palindrome:

def is_palindrome(s):
return s == s[::-1]


3. Count word frequency in a list:

from collections import Counter
words = ['apple', 'banana', 'apple']
print(Counter(words))


4. Swap two variables:

a, b = 5, 10
a, b = b, a


5. Fibonacci using recursion:

def fib(n):
return n if n <= 1 else fib(n-1) + fib(n-2)


6. Find duplicate elements:

lst = [1,2,3,2,4]
duplicates = set([x for x in lst if lst.count(x) > 1])


7. Check if list is sorted:

def is_sorted(lst):
return lst == sorted(lst)


8. Flatten a 2D list:

matrix = [[1, 2], [3, 4]]
flat = [num for row in matrix for num in row]


9. Read a file line by line:

with open('file.txt') as f:
for line in f:
print(line.strip())


10. Lambda & Map usage:

nums = [1, 2, 3]
squares = list(map(lambda x: x**2, nums))


๐Ÿ’ก Practice these with variations, especially for lists, strings, and dictionaries.

๐Ÿ’ฌ Tap โค๏ธ for more!
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๐Ÿš€ ๐— ๐—ฎ๐˜€๐˜๐—ฒ๐—ฟ ๐—œ๐—ป-๐——๐—ฒ๐—บ๐—ฎ๐—ป๐—ฑ ๐—ง๐—ฒ๐—ฐ๐—ต ๐—ฆ๐—ธ๐—ถ๐—น๐—น๐˜€ ๐—ณ๐—ผ๐—ฟ ๐—™๐—ฅ๐—˜๐—˜ ๐—ถ๐—ป ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฒ ๐Ÿ”ฅ

Want to upgrade your tech skills without spending money?

Here are some excellent FREE YouTube resources to learn high-demand technologies through tutorials and hands-on practice.

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https://pdlink.in/4x3B9hb

๐ŸŽฏ Perfect for Students โ€ข Freshers โ€ข Job Seekers โ€ข Working Professionals
What to do and What to avoid!

When sitting in front of an interviewer, your actions and words can make or break your chances.

Itโ€™s more than just answering questions, it's about presenting yourself as the ideal candidate.

Here are some clear do's and don'ts to keep in mind.

๐Ÿ“ŒDo:

1. Be Prepared.
2. Dress Appropriately.
3. Be Punctual.
4. Maintain Good Posture.
5. Listen Carefully.
6. Ask Thoughtful Questions.
7. Be Honest.

๐Ÿ“ŒDon't:

1. Donโ€™t Fidget.
2. Donโ€™t Speak Negatively About Past Employers.
3. Donโ€™t Interrupt.
4. Donโ€™t Overshare.
5. Donโ€™t Forget to Follow Up.

By keeping these dos and donโ€™ts in mind, youโ€™ll be better prepared to make a strong impression in your interview.

Good luck!