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  • 8 авг.Time Complexity: O(n + m) Space Complexity: O(n + m) 1️⃣8️⃣9️⃣ How Do You Check if Two Strings are Anagrams? Answer: Two strings are anagrams if they contain the same characters with the same frequencies, but possibly in a different order. Example: "listen" → "silent" Both contain the same characters, so they are anagrams. Python: str1 = "listen" str2 = "silent" if sorted(str1) == sorted(str2): print("Anagrams") else: print("Not Anagrams") Time Complexity: O(n log n) A frequency-count approach can achieve O(n) average time. 1️⃣9️⃣0️⃣ How Do You Find the First Non-Repeating Character? Answer: Count the frequency of every character, then scan the string again and return the first character whose frequency is "1". Example: Input: "swiss" Output: "w" Python: from collections import Counter text = "swiss" count = Counter(text) for char in text: if count[char] == 1: print(char) break Time Complexity: O(n) Space Complexity: O(k), where "k" is the number of distinct characters. 🔥 Double Tap ❤️ For Part-200,59%
  • 4 авг.1️⃣7️⃣9️⃣ What is DNS? Answer: DNS (Domain Name System) translates human-readable domain names like google.com into IP addresses that computers use to locate each other on the internet. Benefits: ✅ Makes websites easier to access ✅ Eliminates the need to remember IP addresses ✅ Enables efficient internet communication 1️⃣8️⃣0️⃣ What is a CDN? Answer: A CDN (Content Delivery Network) is a network of geographically distributed servers that deliver website content from the server closest to the user. Benefits: ✅ Faster website loading ✅ Reduced latency ✅ Lower server load ✅ Improved availability and reliability ✅ Better user experience for global audiences Examples: Cloudflare, Akamai, Amazon CloudFront, Google Cloud CDN 🔥 Double Tap ❤️ For Part-190,32%
  • 12 авг.List of Top 12 Coding Channels on WhatsApp: 1. Python Programming: https://whatsapp.com/channel/0029VaiM08SDuMRaGKd9Wv0L 2. Coding Resources: https://whatsapp.com/channel/0029VahiFZQ4o7qN54LTzB17 3. Coding Projects: https://whatsapp.com/channel/0029VazkxJ62UPB7OQhBE502 4. Coding Interviews: https://whatsapp.com/channel/0029VammZijATRSlLxywEC3X 5. Java Programming: https://whatsapp.com/channel/0029VamdH5mHAdNMHMSBwg1s 6. Javascript: https://whatsapp.com/channel/0029VavR9OxLtOjJTXrZNi32 7. Web Development: https://whatsapp.com/channel/0029VaiSdWu4NVis9yNEE72z 8. Artificial Intelligence: https://whatsapp.com/channel/0029VaoePz73bbV94yTh6V2E 9. Data Science: https://whatsapp.com/channel/0029Va4QUHa6rsQjhITHK82y 10. Machine Learning: https://whatsapp.com/channel/0029Va8v3eo1NCrQfGMseL2D 11. SQL: https://whatsapp.com/channel/0029VanC5rODzgT6TiTGoa1v 12. GitHub: https://whatsapp.com/channel/0029Vawixh9IXnlk7VfY6w43 ENJOY LEARNING 👍👍0,26%
  • 8 авг.🚀 Coding Interview Questions with Answers (Part 19) 1️⃣8️⃣1️⃣ How Do You Reverse a String? Answer: Reversing a string means arranging its characters in the opposite order. Example: Input: "hello" Output: "olleh" Python: text = "hello" reversed_text = text[::-1] print(reversed_text) Time Complexity: O(n) Space Complexity: O(n) 1️⃣8️⃣2️⃣ How Do You Find the Largest Element in an Array? Answer: Traverse the array while keeping track of the largest value found so far. Example: Input: [10, 25, 7, 42, 18] Output: 42 Python: numbers = [10, 25, 7, 42, 18] largest = numbers[0] for num in numbers: if num > largest: largest = num print(largest) Time Complexity: O(n) Space Complexity: O(1) 1️⃣8️⃣3️⃣ How Do You Find the Second Largest Element in an Array? Answer: Maintain two variables: one for the largest element and another for the second largest. Update them while traversing the array. Example: Input: [10, 25, 7, 42, 18] Output: 25 Python: numbers = [10, 25, 7, 42, 18] largest = second = float('-inf') for num in numbers: if num > largest: second = largest largest = num elif largest > num > second: second = num print(second) Time Complexity: O(n) Space Complexity: O(1) 1️⃣8️⃣4️⃣ How Do You Check Whether a String is a Palindrome? Answer: A palindrome is a string that reads the same forward and backward. Examples: "madam" → Palindrome "level" → Palindrome "hello" → Not a palindrome Python: text = "madam" if text == text[::-1]: print("Palindrome") else: print("Not a palindrome") Time Complexity: O(n) 1️⃣8️⃣5️⃣ How Do You Find Duplicate Elements in an Array? Answer: Use a set to keep track of elements that have already appeared. If an element is already present in the set, it is a duplicate. Example: Input: [1, 2, 3, 2, 4, 1] Output: [1, 2] Python: numbers = [1, 2, 3, 2, 4, 1] seen = set() duplicates = set() for num in numbers: if num in seen: duplicates.add(num) else: seen.add(num) print(duplicates) Average Time Complexity: O(n) Space Complexity: O(n) 1️⃣8️⃣6️⃣ How Do You Remove Duplicates from an Array? Answer: A common approach is to use a set, which stores only unique values. Example: Input: [1, 2, 2, 3, 3, 4] Output: [1, 2, 3, 4] Python: numbers = [1, 2, 2, 3, 3, 4] unique_numbers = list(set(numbers)) print(unique_numbers) If the original order must be preserved: unique_numbers = list(dict.fromkeys(numbers)) Average Time Complexity: O(n) 1️⃣8️⃣7️⃣ How Do You Find the Missing Number in an Array? Answer: If an array contains numbers from "1" to "n" with one number missing, calculate the expected sum and subtract the actual sum. Example: Input: [1, 2, 4, 5] Output: 3 Python: numbers = [1, 2, 4, 5] n = 5 expected = n * (n + 1) // 2 missing = expected - sum(numbers) print(missing) Time Complexity: O(n) Space Complexity: O(1) 1️⃣8️⃣8️⃣ How Do You Merge Two Sorted Arrays? Answer: Use two pointers to compare elements from both arrays and add the smaller element to the result. Example: Input: [1, 3, 5] [2, 4, 6] Output: [1, 2, 3, 4, 5, 6] Python: a = [1, 3, 5] b = [2, 4, 6] i = j = 0 result = [] while i < len(a) and j < len(b): if a[i] < b[j]: result.append(a[i]) i += 1 else: result.append(b[j]) j += 1 while i < len(a): result.append(a[i]) i += 1 while j < len(b): result.append(b[j]) j += 1 print(result)0,22%
  • 7 авг.🚀 𝗙𝗥𝗘𝗘 𝗙𝗿𝗲𝘀𝗵𝗲𝗿 𝗛𝗶𝗿𝗶𝗻𝗴 𝗗𝗿𝗶𝘃𝗲 | 𝗧𝗲𝗰𝗵 𝗥𝗼𝗹𝗲𝘀 𝗨𝗽 𝘁𝗼 ₹𝟭𝟮 𝗟𝗣𝗔!🔥 Internship + Pre-Placement Offer 💼 Company: GoComet 💰 Stipend: ₹30,000–35,000/Month 🚀 PPO: Up to ₹12 LPA 📍 Assessment Centres: Pune | Hyderabad | Noida | Chennai | Bangalore 🔗 𝗔𝗽𝗽𝗹𝘆 𝗡𝗼𝘄 👇: Full Stack Intern:- https://pdlink.in/4z3vF8o AI First SDET Interns :- https://pdlink.in/4hS1Am2 ⏳ Limited Hiring Slots Available0,22%
  • 15 авг.If you aspire to work in top product companies, here’s my advice: 👉 For SDE-1 or SWE positions, focus on: ✔️ Continuously upskilling and improving your abilities. ✔️ Developing strong problem-solving skills. ✔️Mastering DSA – trust me, you’ll be tested on it, so aim to excel. Also, learn how to design scalable systems and understand how to build solutions that can handle growth in users and data. 👉 For higher-level roles (SDE-2 and SDE-3), focus on: ✔️ DSA + System Design (both LLD and HLD). ✔️ Building your leadership skills, as you’ll need to lead teams and projects. 🔸I know it’s challenging to do this while working full-time, but you’ll need to carve out time to consistently upskill yourself. Remember, your learning plan should be sensible and well-organized. Best Programming Resources: https://topmate.io/coding/886839 ENJOY LEARNING 👍👍0,19%
  • 10 авг.🚀 Coding Interview Questions with Answers (Part 20) 1️⃣9️⃣1️⃣ What is the Two Sum Problem? Answer: The Two Sum problem asks you to find two elements in an array whose sum equals a given target. Example: Input: [2][7][11][15] Target: 9 Output: [2][7] A Hash Map can be used to store previously seen values and find the required complement efficiently. Time Complexity: O(n) Space Complexity: O(n) 1️⃣9️⃣2️⃣ What is the Longest Substring Without Repeating Characters Problem? Answer: The goal is to find the longest substring that contains no repeated characters. Example: Input: "abcbb" Output: 3 The longest substring is "abc". A Sliding Window with a Hash Set or Hash Map can solve this efficiently. Time Complexity: O(n) Space Complexity: O(k) 1️⃣9️⃣3️⃣ What is the Longest Common Subsequence (LCS) Problem? Answer: LCS finds the longest sequence that appears in the same order in two strings, but the characters do not need to be adjacent. Example: Input: "abcde" and "ace" Output: "ace" Dynamic Programming is commonly used to solve this problem. Time Complexity: O(m × n) Space Complexity: O(m × n) 1️⃣9️⃣4️⃣ What is the Longest Increasing Subsequence (LIS) Problem? Answer: LIS finds the longest subsequence of an array where the elements are in strictly increasing order. Example: Input: [10][9][2][5][3][7][101][18] Output: 4 One possible LIS is: [2][3][7][101] It can be solved using Dynamic Programming or an optimized Binary Search approach. Time Complexity: O(n log n) using the optimized approach. 1️⃣9️⃣5️⃣ What is the Maximum Subarray Sum Problem? Answer: The goal is to find the contiguous subarray with the largest possible sum. Example: Input: [-2][1][-3][4][-1][2][1][-5][4] Output: 6 The maximum-sum subarray is: [4][-1][2][1] Kadane's Algorithm can solve this efficiently. Time Complexity: O(n) Space Complexity: O(1) 1️⃣9️⃣6️⃣ What is the Merge Intervals Problem? Answer: The Merge Intervals problem requires combining overlapping intervals into a single interval. Example: Input: [[1,3][2,6][8,10][9,12]] Output: [[1,6][8,12]] The typical approach is to sort the intervals by their starting value and then merge overlapping intervals. Time Complexity: O(n log n) Space Complexity: O(n) 1️⃣9️⃣7️⃣ What is the Trapping Rain Water Problem? Answer: The problem asks you to calculate how much rainwater can be trapped between bars of different heights. Example: Input: [0][1][0][2][1][0][1][3][2][1][2][1] Output: 6 A Two Pointers approach can solve this problem efficiently by tracking the maximum height from both sides. Time Complexity: O(n) Space Complexity: O(1) 1️⃣9️⃣8️⃣ What is the Median of Two Sorted Arrays Problem? Answer: The goal is to find the median of two sorted arrays without necessarily merging them completely. Example: Input: [1][3] and [2] Output: 2 An optimized solution uses Binary Search to partition the two arrays correctly. Time Complexity: O(log(min(m,n))) Space Complexity: O(1) 1️⃣9️⃣9️⃣ What is the LRU Cache Problem? Answer: LRU stands for Least Recently Used.0,17%
  • 22:55🤖 Step-by-Step Guide to Master Any Tech Skill (Beginner-Friendly) 🚀 Want to learn a new tech skill? Here’s a complete roadmap from beginner to pro! 1. Pick Your Tech Skill Choose a skill that excites you and aligns with your goals. Examples: • Web Development • Data Science • Cybersecurity • Cloud Computing • AI & Machine Learning 2. Find the Best Learning Resources • Free courses (Coursera, Udacity, Codecademy, Khan Academy) • Books & blogs (Medium, Towards Data Science) • YouTube tutorials (free and structured) • Official documentation (always reliable!) 3. Set Up Your Practice Environment • Install the necessary tools (VS Code, Jupyter, Docker, etc.) • Learn GitHub for version control • Join online communities (Discord, Reddit, GitHub) 4. Hands-On Practice & Mini Projects • Try coding challenges (LeetCode, Codewars) • Start with small projects (build a portfolio site, automate tasks) • Participate in hackathons or open-source projects 5. Deep Dive into Advanced Topics Once you’re comfortable, explore: • Algorithms & data structures • System design principles • Scalability & optimization techniques 6. Create a Portfolio • Showcase projects on GitHub • Build a personal website • Write tech blogs & share insights 7. Stay Updated Tech evolves fast! Follow industry trends via: • Twitter/X (follow experts) • Podcasts & newsletters • Conferences & meetups 8. Apply Your Knowledge • Freelance projects • Internships or open-source contributions • Teach others—explaining solidifies learning! 9. Build Your Network • Connect with professionals on LinkedIn • Engage in tech forums & mentorship programs 10. Keep Improving! • Learn continuously • Experiment with new tools • Take on bigger challenges 🔥 Tip: Learning by doing > Watching endless tutorials. Build something real! 💬 React ❤️ if you found this helpful! 🚀0,16%
  • 8 авг.🚀 𝗧𝗼𝗽 𝗣𝗼𝘄𝗲𝗿 𝗕𝗜 𝗜𝗻𝘁𝗲𝗿𝘃𝗶𝗲𝘄 𝗤𝘂𝗲𝘀𝘁𝗶𝗼𝗻𝘀 𝗔𝘀𝗸𝗲𝗱 𝗯𝘆 𝗟𝗲𝗮𝗱𝗶𝗻𝗴 𝗖𝗼𝗺𝗽𝗮𝗻𝗶𝗲𝘀 📊 💼 Companies hiring Power BI professionals include: Microsoft, Deloitte, Accenture, Capgemini, TCS, Infosys, Cognizant, EY, PwC, KPMG, IBM, Wipro, and many more. ✅ Frequently Asked Interview Questions ✅ Beginner to Advanced Level Coverage ✅ Improve Your Problem-Solving Skills ✅ Build Interview Confidence ✅ Prepare for Top MNC Hiring Drives 𝐋𝐢𝐧𝐤👇:- https://pdlink.in/4xqxg6v 🔥 Master Power BI interview concepts and take one step closer to landing your dream Data Analytics job!0,15%
  • 10 авг.An LRU Cache removes the item that has not been used for the longest time when the cache reaches its capacity. A common implementation uses: • Hash Map for O(1) lookup. • Doubly Linked List for O(1) insertion and removal. Time Complexity: • Get: O(1) • Put: O(1) 2️⃣0️⃣0️⃣ How Would You Design a URL Shortener? Answer: A URL shortener converts a long URL into a short, unique URL. Example: Long URL: https://example.com/products/category/item/12345 Short URL: https://short.ly/aB92x A basic system can use: 1. Generate a unique ID for each URL. 2. Convert the ID into a short Base62 string. 3. Store the mapping between the short code and original URL. 4. When the short URL is requested, look up the original URL. 5. Redirect the user to the original URL. Important Design Considerations: • Unique short IDs • Database design • Caching • Scalability • High availability • Expiration of URLs • Analytics and click tracking 🔥 Double Tap ❤️ For More0,14%
  • 6 авг.If you want to get a job as a machine learning engineer, don’t start by diving into the hottest libraries like PyTorch,TensorFlow, Langchain, etc. Yes, you might hear a lot about them or some other trending technology of the year...but guess what! Technologies evolve rapidly, especially in the age of AI, but core concepts are always seen as more valuable than expertise in any particular tool. Stop trying to perform a brain surgery without knowing anything about human anatomy. Instead, here are basic skills that will get you further than mastering any framework: 𝐌𝐚𝐭𝐡𝐞𝐦𝐚𝐭𝐢𝐜𝐬 𝐚𝐧𝐝 𝐒𝐭𝐚𝐭𝐢𝐬𝐭𝐢𝐜𝐬 - My first exposure to probability and statistics was in college, and it felt abstract at the time, but these concepts are the backbone of ML. You can start here: Khan Academy Statistics and Probability - https://www.khanacademy.org/math/statistics-probability 𝐋𝐢𝐧𝐞𝐚𝐫 𝐀𝐥𝐠𝐞𝐛𝐫𝐚 𝐚𝐧𝐝 𝐂𝐚𝐥𝐜𝐮𝐥𝐮𝐬 - Concepts like matrices, vectors, eigenvalues, and derivatives are fundamental to understanding how ml algorithms work. These are used in everything from simple regression to deep learning. 𝐏𝐫𝐨𝐠𝐫𝐚𝐦𝐦𝐢𝐧𝐠 - Should you learn Python, Rust, R, Julia, JavaScript, etc.? The best advice is to pick the language that is most frequently used for the type of work you want to do. I started with Python due to its simplicity and extensive library support, and it remains my go-to language for machine learning tasks. You can start here: Automate the Boring Stuff with Python - https://automatetheboringstuff.com/ 𝐀𝐥𝐠𝐨𝐫𝐢𝐭𝐡𝐦 𝐔𝐧𝐝𝐞𝐫𝐬𝐭𝐚𝐧𝐝𝐢𝐧𝐠 - Understand the fundamental algorithms before jumping to deep learning. This includes linear regression, decision trees, SVMs, and clustering algorithms. 𝐃𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭 𝐚𝐧𝐝 𝐏𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧: Knowing how to take a model from development to production is invaluable. This includes understanding APIs, model optimization, and monitoring. Tools like Docker and Flask are often used in this process. 𝐂𝐥𝐨𝐮𝐝 𝐂𝐨𝐦𝐩𝐮𝐭𝐢𝐧𝐠 𝐚𝐧𝐝 𝐁𝐢𝐠 𝐃𝐚𝐭𝐚: Familiarity with cloud platforms (AWS, Google Cloud, Azure) and big data tools (Spark) is increasingly important as datasets grow larger. These skills help you manage and process large-scale data efficiently. You can start here: Google Cloud Machine Learning - https://cloud.google.com/learn/training/machinelearning-ai I love frameworks and libraries, and they can make anyone's job easier. But the more solid your foundation, the easier it will be to pick up any new technologies and actually validate whether they solve your problems. USEFUL RESOURCES TO LEARN MACHINE LEARNING 👇👇 Intro to ML by MIT Free Course https://openlearninglibrary.mit.edu/courses/course-v1:MITx+6.036+1T2019/about Machine Learning for Everyone FREE BOOK https://buildmedia.readthedocs.org/media/pdf/pymbook/latest/pymbook.pdf ML Crash Course by Google https://developers.google.com/machine-learning/crash-course Advanced Machine Learning with Python Github https://github.com/PacktPublishing/Advanced-Machine-Learning-with-Python Practical Machine Learning Tools and Techniques Free Book https://vk.com/doc10903696_437487078?hash=674d2f82c486ac525b&dl=ed6dd98cd9d60a642b Python Machine Learning for beginners https://t.me/datasciencefun/1177?single https://topmate.io/coding/914624 All the best 👍👍0,12%
  • 6 авг.🚀 𝟰 𝗙𝗥𝗘𝗘 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗖𝗼𝘂𝗿𝘀𝗲𝘀 𝗧𝗼 𝗕𝗼𝗼𝘀𝘁 𝗬𝗼𝘂𝗿 𝗥𝗲𝘀𝘂𝗺𝗲🔥 Add these 100% FREE certification courses to your resume and gain valuable, job-ready skills that employers look for. ✅ 100% FREE Certification Courses ✅ Beginner-Friendly Learning ✅ Industry-Relevant Skills ✅ Self-Paced Online Learning ✅ Strengthen Your Resume & LinkedIn Profile ✅ Improve Your Job & Internship Opportunities 𝗘𝗻𝗿𝗼𝗹𝗹 𝗙𝗼𝗿 𝗙𝗥𝗘𝗘👇:- https://pdlink.in/4bwkOtA 🔥 Invest in your skills today and give your resume the competitive edge it deserves!0,12%