Coding Interview Resources

Python vs C++ vs Java

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Top 20 DSA questions asked in Data Engineering interviews at MAANG 1. Given an array of integers and a target value, find two numbers in the array that sum up to the target. Return the indices of the two numbers. 2. How do you reverse a singly linked list? 3. How do you find the missing number in an array of size N with numbers from 1 to N+1? 4. What is the approach to detect a cycle in a linked list? 5. How would you merge two sorted arrays? 6. How do you find the Kth largest element in an unsorted array? 7. What’s the approach to finding the longest substring without repeating characters? 8. How do you find the middle element of a linked list? 9. Explain level order traversal in a binary tree. 10. How do you find the Lowest Common Ancestor (LCA) of two nodes in a binary tree? 11. How do you find the maximum sum subarray (using Kadane's Algorithm)? 12. What’s the approach for finding the longest common subsequence between two strings? 13. How would you merge two sorted linked lists? 14. How do you check if parentheses in an expression are valid? 15. What is the binary search algorithm and how do you implement it? 16. How would you find the duplicate number in an array containing numbers from 1 to N? 17. What is the approach to reversing a string? 18. How do you find the product of all elements in an array except the current element? 19. How would you group anagrams from a list of strings? 20. How would you solve a Sudoku puzzle using backtracking? DSA Interview Preparation Resources: https://topmate.io/coding/886874 ENJOY LEARNING 👍👍

𝗧𝗮𝘁𝗮 𝗚𝗿𝗼𝘂𝗽 𝗙𝗥𝗘𝗘 𝗩𝗶𝗿𝘁𝘂𝗮𝗹 𝗜𝗻𝘁𝗲𝗿𝗻𝘀𝗵𝗶𝗽 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝘀😍 TCS plans to hire 40,000 trainees in 2025, here are these 3 virtual internships by Tata Group that you can take which will take roughly 4-6 hours to complete. After completing this internship you will get a free certificate that you can add in your resume which will help to increase your chances of getting hired.  𝐋𝐢𝐧𝐤 👇:-  https://pdlink.in/40Ej1MM Enroll For FREE & Get Certified 🎓

Ages of Operating Systems👨🏻‍💻😎 📂 Windows 11 (3 years old) 🪟 Windows 10 (8 years old) 🍎 macOS Yosemite (10 years old) 🐉 Kali Linux (11 years old) 💻 Windows 8 (12 years old) 🌐 Manjaro (11 years old) 💻 Windows 7 (14 years old) 🖥️ Windows Vista (17 years old) 🌿 Linux Mint (18 years old) 🐧 Ubuntu (20 years old) ⚙️ Fedora (20 years old) 🔧 OpenSUSE (20 years old) ⚙️ CentOS (20 years old) 🐧 Arch Linux (22 years old) 🍏 macOS (22 years old) 💻 Windows XP (23 years old) 🖥️ Windows 2000 (24 years old) 📱 Windows 98 (25 years old) 🌍 Windows 95 (28 years old) 💻 Windows 3.1 (29 years old) 🖥️ OS/2 (32 years old) 🐧 Debian (31 years old) 🔴 Red Hat Linux (30 years old) 🎮 AmigaOS (34 years old) 🖥️ Xenix (40 years old) 📀 VMS (44 years old) 💾 MS-DOS (42 years old) 💾 CP/M (49 years old) 🖥️ Unix (54 years old)

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🌟 Why Java Feels Harder Than C++ Sometimes 🌟 1. Java: Why write one line when you can write 5? Every variable needs its type, every method needs a class. C++: Write code anywhere. Procedural, OOP, or just chaos. Your call. 🚀 2. Java: Even the simplest main needs a whole public class. 🤡 C++: Need a main()? Just write it. Done. 3. Java: Checked exceptions—catch me or I'll scream. 🎭 C++: Exceptions? Handle them... or don’t. No hard feelings, bro. 4. Java: No unsigned integers. Imagine life without them. Big sad. 😔 C++: Choose your poison—int, unsigned, long long. So many options to confuse you. 5. Java: Print something? Get ready: System.out.println(). Keyboard workout. ⌨️💪 C++: cout <<. Done faster than you can say “hello world.” 6. Java: Multi-threading? Write a novel and pray the JVM approves. 📚 C++: Threading? Use libraries. Use APIs. DIY is the way. 7. Java: Generics—looks simple but screams at you later. 🤯 C++: Templates are like magic. Dark magic—you’ll debug forever, though. 8. Java: Misspell a package name? Good luck. 📦 C++: Namespaces confuse, but fewer typos. 9. Java: The JVM controls your code and life. 👁️ C++: Compile once, run anywhere—until undefined behavior strikes. 🌀 10. Java: No operators in the name. C++: The name is an operator. That's how cool it is. 😎

Trump’s Limits of Control Are Beyond Normal Not only can the president freeze all funding amid a review, but he must also then be permitted to permanently eliminate items from appropriations statutes at a whim. It’s a move that threatens not only a radical curtailment of Congress’ authority but imperils the separation of American civil society from the partisan tides of the White House. The Constitution’s text is clear that Congress must authorize appropriations and the president must “take care” that those laws are “faithfully executed.” There is no basis in constitutional text or history for the president to claim open-ended power to impound funds in the manner of the OMB memo. Could the White House withhold relief funds before the election, and then give money to solely Republican-leaning districts? Imagine that the White House withdraws funding from every hospital in the country providing reproductive care and abortions. #OMB #constitution #impoudment 📱 American Оbserver - Stay up to date on all important events 🇺🇸

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✅Meta interview questions : Most asked in last 30 days 1. 1249. Minimum Remove to Make Valid Parentheses 2. 408. Valid Word Abbreviation 3. 215. Kth Largest Element in an Array 4. 314. Binary Tree Vertical Order Traversal 5. 88. Merge Sorted Array 6. 339. Nested List Weight Sum 7. 680. Valid Palindrome II 8. 973. K Closest Points to Origin 9. 1650. Lowest Common Ancestor of a Binary Tree III 10. 1. Two Sum 11. 791. Custom Sort String 12. 56. Merge Intervals 13. 528. Random Pick with Weight 14. 1570. Dot Product of Two Sparse Vectors 15. 50. Pow(x, n) 16. 65. Valid Number 17. 227. Basic Calculator II 18. 560. Subarray Sum Equals K 19. 71. Simplify Path 20. 200. Number of Islands 21. 236. Lowest Common Ancestor of a Binary Tree 22. 347. Top K Frequent Elements 23. 498. Diagonal Traverse 24. 543. Diameter of Binary Tree 25. 1768. Merge Strings Alternately 26. 2. Add Two Numbers 27. 4. Median of Two Sorted Arrays 28. 7. Reverse Integer 29. 31. Next Permutation 30. 34. Find First and Last Position of Element in Sorted Array 31. 84. Largest Rectangle in Histogram 32. 146. LRU Cache 33. 162. Find Peak Element 34. 199. Binary Tree Right Side View 35. 938. Range Sum of BST 36. 17. Letter Combinations of a Phone Number 37. 125. Valid Palindrome 38. 153. Find Minimum in Rotated Sorted Array 39. 283. Move Zeroes 40. 523. Continuous Subarray Sum 41. 658. Find K Closest Elements 42. 670. Maximum Swap 43. 827. Making A Large Island 44. 987. Vertical Order Traversal of a Binary Tree 45. 1757. Recyclable and Low Fat Products 46. 1762. Buildings With an Ocean View 47. 2667. Create Hello World Function 48. 5. Longest Palindromic Substring 49. 15. 3Sum 50. 19. Remove Nth Node From End of List 51. 70. Climbing Stairs 52. 80. Remove Duplicates from Sorted Array II 53. 113. Path Sum II 54. 121. Best Time to Buy and Sell Stock 55. 127. Word Ladder 56. 128. Longest Consecutive Sequence 57. 133. Clone Graph 58. 138. Copy List with Random Pointer 59. 140. Word Break II 60. 142. Linked List Cycle II 61. 145. Binary Tree Postorder Traversal 62. 173. Binary Search Tree Iterator 63. 206. Reverse Linked List 64. 207. Course Schedule 65. 394. Decode String 66. 415. Add Strings 67. 437. Path Sum III 68. 468. Validate IP Address 70. 691. Stickers to Spell Word 71. 725. Split Linked List in Parts 72. 766. Toeplitz Matrix 73. 708. Insert into a Sorted Circular Linked List 74. 1091. Shortest Path in Binary Matrix 75. 1514. Path with Maximum Probability 76. 1609. Even Odd Tree 77. 1868. Product of Two Run-Length Encoded Arrays 78. 2022. Convert 1D Array Into 2D Array DSA Interview Preparation Resources: https://topmate.io/coding/886874 ENJOY LEARNING 👍👍

©How fresher can get a job as a data scientist?© Job market is highly resistant to hire data scientist as a fresher. Everyone out there asks for at least 2 years of experience, but then the question is where will we get the two years experience from? The important thing here to build a portfolio. As you are a fresher I would assume you had learnt data science through online courses. They only teach you the basics, the analytical skills required to clean the data and apply machine learning algorithms to them comes only from practice. Do some real-world data science projects, participate in Kaggle competition. kaggle provides data sets for practice as well. Whatever projects you do, create a GitHub repository for it. Place all your projects there so when a recruiter is looking at your profile they know you have hands-on practice and do know the basics. This will take you a long way. All the major data science jobs for freshers will only be available through off-campus interviews. Some companies that hires data scientists are: Siemens Accenture IBM Cerner Creating a technical portfolio will showcase the knowledge you have already gained and that is essential while you got out there as a fresher and try to find a data scientist job.

𝗚𝗲𝘁 𝗬𝗼𝘂𝗿 𝗗𝗿𝗲𝗮𝗺 𝗝𝗼𝗯 𝗜𝗻 𝗔𝗺𝗮𝘇𝗼𝗻, 𝗚𝗼𝗼𝗴𝗹𝗲, 𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁, 𝗡𝗩𝗜𝗗𝗜𝗔, 𝗮𝗻𝗱 𝗠𝗲𝘁𝗮 (𝗙𝗮𝗰𝗲𝗯𝗼𝗼𝗸) 𝘄𝗶𝘁𝗵 𝘁𝗵𝗲𝘀𝗲 𝗰𝗼𝗺𝗽𝗿𝗲𝗵𝗲𝗻𝘀𝗶𝘃𝗲 𝗿𝗲𝘀𝗼𝘂𝗿𝗰𝗲𝘀😍 1️⃣ Amazon Interviewing Guide 2️⃣ Google Interview Tips 3️⃣ Microsoft Hiring Tips 4️⃣ NVIDIA Hiring Process 5️⃣ Meta Onsite SWE Prep Guide 𝐋𝐢𝐧𝐤👇:- https://pdlink.in/40OSJJ6 Crack Interview & Get Your Dream Job In Top MNCs

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Essential Tools & Programming Languages for Software Developers 👉 Integrated Development Environments (IDEs): - Visual Studio Code: A lightweight but powerful source code editor that supports various programming languages and extensions. - IntelliJ IDEA: A popular IDE for Java development, also supporting other languages through plugins. - Eclipse: Another widely used IDE for Java, with extensive plugin support for other languages. 👉 Version Control Systems: - Git: A distributed version control system that allows developers to track changes in their codebase, collaborate with others, and manage project history. GitHub, GitLab, and Bitbucket are popular platforms that use Git. 👉 Programming Languages: - JavaScript: Essential for web development, with frameworks like React, Angular, and Vue.js for front-end development and Node.js for server-side programming. - Python: Known for its simplicity and versatility, used in web development (Django, Flask), data science (NumPy, Pandas), and automation. - Java: Widely used for building enterprise-scale applications, Android app development, and backend systems. - C#: A language developed by Microsoft, primarily used for building Windows applications and games using the Unity engine. - C++: Known for its performance, used in system/software development, game development, and applications requiring real-time processing. - Ruby: Known for its simplicity and productivity, often used in web development with the Ruby on Rails framework. 👉 Web Development Frameworks: - React: A JavaScript library for building user interfaces, particularly single-page applications. - Angular: A TypeScript-based framework for building dynamic web applications. - Django: A high-level Python web framework that encourages rapid development and clean, pragmatic design. - Spring: A comprehensive framework for Java that provides infrastructure support for developing Java applications. 👉 Database Management Systems: - MySQL: An open-source relational database management system. - PostgreSQL: An open-source object-relational database system with a strong emphasis on extensibility and standards compliance. - MongoDB: A NoSQL database that uses a flexible, JSON-like format for storing data. 👉 Containerization and Orchestration: - Docker: A platform that allows developers to package applications into containers, ensuring consistency across multiple environments. - Kubernetes: An open-source system for automating deployment, scaling, and management of containerized applications. 👉 Cloud Platforms: - Amazon Web Services (AWS): A comprehensive cloud platform offering a wide range of services, including computing power, storage, and databases. - Microsoft Azure: A cloud computing service created by Microsoft for building, testing, deploying, and managing applications. - Google Cloud Platform (GCP): A suite of cloud computing services provided by Google. 👉 CI/CD Tools: - Jenkins: An open-source automation server that helps automate the parts of software development related to building, testing, and deploying. - Travis CI: A continuous integration service used to build and test software projects hosted on GitHub. 👉 Project Management and Collaboration: - Jira: A tool developed by Atlassian for bug tracking, issue tracking, and project management. - Trello: A visual tool for organizing tasks and projects into boards. Programming & Data Analytics Resources: https://t.me/free4unow_backup/796 Best Programming Resources: https://topmate.io/coding/886839 Join @free4unow_backup for more free courses Like for more ❤️ ENJOY LEARNING👍👍

☢️Nuclear War Alert ☢️ Large-Scale Nuclear Training Exercise to Take Place in Schenectady, New York As tensions between the United States and Europe over the Atlantic region escalate, US prepares for nuclear conflict. FBI:

“From January 26-31, 2025, a large-scale, multi-agency nuclear incident training exercise will take place in the vicinity of Schenectady, New York, and surrounding counties of Albany, Saratoga, and Schenectady. The exercise is an opportunity for participating entities to practice and enhance operational readiness to respond in the event of a nuclear incident in the United States or overseas. Due to the sensitive nature of the capabilities being implemented, the training activities are not open to the public or media.”

#War #nuclearexercises #US #Europe #Greenland #Arcticregion #nuclearproliferation 🇪🇺 Keep up with the latest Star Union News  🖥

Top 9 websites for practicing algorithms and Data structure. ⛓ https://www.hackerrank.com/ ⛓ https://leetcode.com/ ⛓ https://www.codewars.com/ ⛓ https://www.hackerearth.com/for-developers ⛓ https://coderbyte.com/ ⛓ https://www.coursera.org/browse/computer-science/algorithms ⛓ https://www.codechef.com/ ⛓ https://codeforces.com/ ⛓ https://www.geeksforgeeks.org/