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Join channel - https://t.me/coderbroo
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https://drive.google.com/drive/folders/1-xmLdiHEtepyVeam-z2j3KdhZWPfCmL4
Complete Frontend + Server side Resources, Ebooks, Notes, Interview Questions Everything 🤩
React with any random emoji, if you can access the resources 😄🔥
Hope this helps you!!
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*Tech News ❗️❗️*
➡️CMF Phone 1 to launch in India soon, Nothing confirms.
➡️Single crack on iPhones, Apple Watches no longer covered under warranty.
➡️Amazon agrees to Purchase some assets of MX Player in $100 million deal.
➡️Nvidia overtakes Apple as No. 2 most valuable company.
➡️Humane is reportedly trying to sell itself to HP for $1 billion.
➡️RBI sets up panel to track online payment frauds.
➡️Salesforce to open London AI centre as part of $4bn UK investment.
➡️SAP to acquire Israel-based digital adoption platform WalkMe for $1.5bn.
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*Role : chat process /Back office/backend/ operations/Support / content writing*
*Salary: 3.4lacs for freshers exp upto based on previous salary 5.90lacs*
*Eligibility: freshers & experienced*
*Education: Any graduation or Intermediate*
*Interested Can apply*
*You Can Choose Work From Home Or Work from Office
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🔰Complete DSA Roadmap🔰
|-- Basic_Data_Structures
| |-- Arrays
| |-- Strings
| |-- Linked_Lists
| |-- Stacks
| └─ Queues
|
|-- Advanced_Data_Structures
| |-- Trees
| | |-- Binary_Trees
| | |-- Binary_Search_Trees
| | |-- AVL_Trees
| | └─ B-Trees
| |
| |-- Graphs
| | |-- Graph_Representation
| | | |- Adjacency_Matrix
| | | └ Adjacency_List
| | |
| | |-- Depth-First_Search
| | |-- Breadth-First_Search
| | |-- Shortest_Path_Algorithms
| | | |- Dijkstra's_Algorithm
| | | └ Bellman-Ford_Algorithm
| | |
| | └─ Minimum_Spanning_Tree
| | |- Prim's_Algorithm
| | └ Kruskal's_Algorithm
| |
| |-- Heaps
| | |-- Min_Heap
| | |-- Max_Heap
| | └─ Heap_Sort
| |
| |-- Hash_Tables
| |-- Disjoint_Set_Union
| |-- Trie
| |-- Segment_Tree
| └─ Fenwick_Tree
|
|-- Algorithmic_Paradigms
| |-- Brute_Force
| |-- Divide_and_Conquer
| |-- Greedy_Algorithms
| |-- Dynamic_Programming
| |-- Backtracking
| |-- Sliding_Window_Technique
| |-- Two_Pointer_Technique
| └─ Divide_and_Conquer_Optimization
| |-- Merge_Sort_Tree
| └─ Persistent_Segment_Tree
|
|-- Searching_Algorithms
| |-- Linear_Search
| |-- Binary_Search
| |-- Depth-First_Search
| └─ Breadth-First_Search
|
|-- Sorting_Algorithms
| |-- Bubble_Sort
| |-- Selection_Sort
| |-- Insertion_Sort
| |-- Merge_Sort
| |-- Quick_Sort
| └─ Heap_Sort
|
|-- Graph_Algorithms
| |-- Depth-First_Search
| |-- Breadth-First_Search
| |-- Topological_Sort
| |-- Strongly_Connected_Components
| └─ Articulation_Points_and_Bridges
|
|-- Dynamic_Programming
| |-- Introduction_to_DP
| |-- Fibonacci_Series_using_DP
| |-- Longest_Common_Subsequence
| |-- Longest_Increasing_Subsequence
| |-- Knapsack_Problem
| |-- Matrix_Chain_Multiplication
| └─ Dynamic_Programming_on_Trees
|
|-- Mathematical_and_Bit_Manipulation_Algorithms
| |-- Prime_Numbers_and_Sieve_of_Eratosthenes
| |-- Greatest_Common_Divisor
| |-- Least_Common_Multiple
| |-- Modular_Arithmetic
| └─ Bit_Manipulation_Tricks
|
|-- Advanced_Topics
| |-- Trie-based_Algorithms
| | |-- Auto-completion
| | └─ Spell_Checker
| |
| |-- Suffix_Trees_and_Arrays
| |-- Computational_Geometry
| |-- Number_Theory
| | |-- Euler's_Totient_Function
| | └─ Mobius_Function
| |
| └─ String_Algorithms
| |-- KMP_Algorithm
| └─ Rabin-Karp_Algorithm
|
|-- OnlinePlatforms
| |-- LeetCode
| |-- HackerRank
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Python script that generates a QR code from user-provided text or a URL using the qrcode library:
import qrcode
def generate_qr_code(data, filename):
# Create a QR code instance
qr = qrcode.QRCode(
version=1,
error_correction=qrcode.constants.ERROR_CORRECT_L,
box_size=10,
border=4,
)
# Add the data to the QR code
qr.add_data(data)
qr.make(fit=True)
# Generate the QR code image
img = qr.make_image(fill_color="black", back_color="white")
# Save the QR code image to a file
img.save(filename)
print(f"QR code saved as '{filename}'")
if name == "main":
print("QR Code Generator")
data = input("Enter the text or URL to encode: ")
filename = input("Enter the filename (e.g., qrcode.png): ")
# Generate the QR code
generate_qr_code(data, filename)
Here's how the script works:
1. The qrcode library is imported to generate QR codes.
2. The generate_qr_code function takes two arguments: data (the text or URL to encode) and filename (the name of the file to save the QR code image).
3. Inside the function, a QRCode instance is created with some configuration options, such as version, error correction level, box size, and border width.
4. The add_data method is called to add the provided data to the QR code.
5. The make method is called to generate the QR code image.
6. The make_image method is used to create a PIL image object from the QR code, specifying the fill color (black) and background color (white).
7. The save method is called on the image object to save the QR code image to the specified filename.
8. In the if name == "main": block, the script prompts the user to enter the text or URL to encode and the filename for the QR code image.
9. The generate_qr_code function is called with the user-provided data and filename.
To run the script, save it to a file (e.g., qr_code_generator.py) and execute it using the Python interpreter. You'll be prompted to enter the text or URL to encode and the filename for the QR code image. After providing the necessary input, the script will generate the QR code image and save it to the specified filename.
Note that you need to have the qrcode library installed. You can install it using pip:
pip install qrcode
Feel free to modify the script according to your needs, such as adding error handling, customizing the QR code appearance, or integrating it with a graphical user interface (GUI) framework like Tkinter or PyQt.
3 979
import qrcode
def generate_qr_code(data, filename):
# Create a QR code instance
qr = qrcode.QRCode(
version=1,
error_correction=qrcode.constants.ERROR_CORRECT_L,
box_size=10,
border=4,
)
# Add the data to the QR code
qr.add_data(data)
qr.make(fit=True)
# Generate the QR code image
img = qr.make_image(fill_color="black", back_color="white")
# Save the QR code image to a file
img.save(filename)
print(f"QR code saved as '{filename}'")
if name == "main":
print("QR Code Generator")
data = input("Enter the text or URL to encode: ")
filename = input("Enter the filename (e.g., qrcode.png): ")
# Generate the QR code
generate_qr_code(data, filename)
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Here are the 50 JavaScript interview questions for 2024
1. What is JavaScript?
2. What are the data types in JavaScript?
3. What is the difference between null and undefined?
4. Explain the concept of hoisting in JavaScript.
5. What is a closure in JavaScript?
6. What is the difference between “==” and “===” operators in JavaScript?
7. Explain the concept of prototypal inheritance in JavaScript.
8. What are the different ways to define a function in JavaScript?
9. How does event delegation work in JavaScript?
10. What is the purpose of the “this” keyword in JavaScript?
11. What are the different ways to create objects in JavaScript?
12. Explain the concept of callback functions in JavaScript.
13. What is event bubbling and event capturing in JavaScript?
14. What is the purpose of the “bind” method in JavaScript?
15. Explain the concept of AJAX in JavaScript.
16. What is the “typeof” operator used for?
17. How does JavaScript handle errors and exceptions?
18. Explain the concept of event-driven programming in JavaScript.
19. What is the purpose of the “async” and “await” keywords in JavaScript?
20. What is the difference between a deep copy and a shallow copy in JavaScript?
21. How does JavaScript handle memory management?
22. Explain the concept of event loop in JavaScript.
23. What is the purpose of the “map” method in JavaScript?
24. What is a promise in JavaScript?
25. How do you handle errors in promises?
26. Explain the concept of currying in JavaScript.
27. What is the purpose of the “reduce” method in JavaScript?
28. What is the difference between “null” and “undefined” in JavaScript?
29. What are the different types of loops in JavaScript?
30. What is the difference between “let,” “const,” and “var” in JavaScript?
31. Explain the concept of event propagation in JavaScript.
32. What are the different ways to manipulate the DOM in JavaScript?
33. What is the purpose of the “localStorage” and “sessionStorage” objects?
34. How do you handle asynchronous operations in JavaScript?
35. What is the purpose of the “forEach” method in JavaScript?
36. What are the differences between “let” and “var” in JavaScript?
37. Explain the concept of memoization in JavaScript.
38. What is the purpose of the “splice” method in JavaScript arrays?
39. What is a generator function in JavaScript?
40. How does JavaScript handle variable scoping?
41. What is the purpose of the “split” method in JavaScript?
42. What is the difference between a deep clone and a shallow clone of an object?
43. Explain the concept of the event delegation pattern.
44. What are the differences between JavaScript’s “null” and “undefined”?
45. What is the purpose of the “arguments” object in JavaScript?
46. What are the different ways to define methods in JavaScript objects?
47. Explain the concept of memoization and its benefits.
48. What is the difference between “slice” and “splice” in JavaScript arrays?
49. What is the purpose of the “apply” and “call” methods in JavaScript?
50. Explain the concept of the event loop in JavaScript and how it handles asynchronous operations.
____
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