Darsh Mamtora

Uber Off-campus Online Assessment round of DSA conducted multiple times in July and more than 1500+ candidates sat for this exam. 𝐓𝐡𝐞𝐫𝐞 𝐰𝐞𝐫𝐞 𝐭𝐨𝐭𝐚𝐥 18 𝐝𝐢𝐟𝐟𝐞𝐫𝐞𝐧𝐭 𝐩𝐫𝐨𝐛𝐥𝐞𝐦𝐬 𝐚𝐧𝐝 𝐰𝐞 𝐚𝐫𝐞 𝐠𝐨𝐢𝐧𝐠 𝐭𝐨 𝐝𝐢𝐬𝐜𝐮𝐬𝐬 some 𝐨𝐟 𝐭𝐡𝐞𝐦 𝐢𝐧 𝐭𝐡𝐞 𝐥𝐢𝐯𝐞 𝐦𝐚𝐬𝐭𝐞𝐫-𝐜𝐥𝐚𝐬𝐬 on Saturday(Link to join in the comments!) 𝐒𝐭𝐫𝐚𝐭𝐞𝐠𝐲 𝐟𝐨𝐫 Uber 𝐎𝐀 :- 𝐀𝐥𝐥 𝐩𝐫𝐨𝐛𝐥𝐞𝐦𝐬 𝐢𝐧𝐯𝐨𝐥𝐯𝐞𝐝 DP(so study all hard variations of DP) + Greedy + Tree-DP + Binary search so focus on them the most Name - Select Maximum. The crux of the problem is given an array of size "N"; you can make some teams out of this N integers; each integer can join only 1 group now select <=m teams such that all teams are good ; a team is good if difference between the largest and smallest number in that group<=5 Task is to maximize the number of people selected to form the teams. Solution :- Lots of observation + Partition DP + Brilliant optimization. We give free FAANG level DSA + OA training on weekend; link in the comments! #kumark #coding

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History isn't inherently boring; it's all about how it is explained and presented. I am diving into Akshay Saini 🚀 Node.js course and I learned some insights about the history of the Node.js. 🔺 Node.js is a Javascript run time environment built on Chrome V8 Javascript engine which executes JavaScript code on the server side. 🔺 Node.js is cross-platform - it can run on various operating systems such as Windows, Linux, and macOS. 𝐖𝐡𝐞𝐧𝐞𝐯𝐞𝐫 𝐭𝐡𝐞𝐫𝐞 𝐢𝐬 𝐉𝐚𝐯𝐚𝐬𝐜𝐫𝐢𝐩𝐭, 𝐭𝐡𝐞𝐫𝐞 𝐰𝐢𝐥𝐥 𝐚𝐥𝐬𝐨 𝐛𝐞 𝐉𝐚𝐯𝐚𝐬𝐜𝐫𝐢𝐩𝐭 𝐞𝐧𝐠𝐢𝐧𝐞 🔹 2009: Node.js was introduced by 𝐑𝐲𝐚𝐧 𝐃𝐚𝐡𝐥. Initially Ryan Dahl used the SpiderMonkey JavaScript engine before switching to V8. He originally named as 𝐖𝐞𝐛.𝐣𝐬 but renamed it to Node.js to reflect its broader scope beyond just web servers. Apache is a blocking HTTP server that handles requests sequentially. Considering this, Ryan Dahl created Node.js as a non-blocking server that can manage multiple requests with fewer threads by using an event-driven, asynchronous model. 🔹 2010:  NPM was introduced changing the way we handle Node.js packages and dependencies. 🔹 2011: Initially Node.js was built only for mac os and linux. Joyent, Software company (in which Ryan works) and Microsoft had a partnership for Node.js support expanded to Windows, enhancing its reach and popularity. 🔹 2012: After Ryan Dahl stepped away, Isaac Schlueter, the creator of npm, took over the project. This transition temporarily slowed development. 🔹 2014: In response to concerns about the pace and management of Node.js, Fedor forked it and created IO.js. 🔹 2015: Node.js Foundation brought io.js and Node.js together, improving the project and its governance. 🔹 2019: JS Foundation and Node.js Foundation merged to form OpenJS Foundation, allowing Node.js to continue to grow and innovate. The history of technology helps to understand where we are today. It’s more about evolution of tech. #NodeJS

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Uber Off-campus Online Assessment round of DSA conducted multiple times in July and more than 15000+ candidates sat for this exam. 𝐓𝐡𝐞𝐫𝐞 𝐰𝐞𝐫𝐞 𝐭𝐨𝐭𝐚𝐥 18 𝐝𝐢𝐟𝐟𝐞𝐫𝐞𝐧𝐭 𝐩𝐫𝐨𝐛𝐥𝐞𝐦𝐬 𝐚𝐧𝐝 𝐰𝐞 𝐚𝐫𝐞 𝐠𝐨𝐢𝐧𝐠 𝐭𝐨 𝐝𝐢𝐬𝐜𝐮𝐬𝐬 some 𝐨𝐟 𝐭𝐡𝐞𝐦 𝐢𝐧 𝐭𝐡𝐞 𝐥𝐢𝐯𝐞 𝐦𝐚𝐬𝐭𝐞𝐫-𝐜𝐥𝐚𝐬𝐬 on Saturday(Link to join in the comments!) 𝐒𝐭𝐫𝐚𝐭𝐞𝐠𝐲 𝐟𝐨𝐫 Uber 𝐎𝐀 :- 𝐀𝐥𝐥 𝐩𝐫𝐨𝐛𝐥𝐞𝐦𝐬 𝐢𝐧𝐯𝐨𝐥𝐯𝐞𝐝 DP(so study all hard variations of DP) + Greedy + Tree-DP + Binary search so focus on them the most Name - Harmonious Sequence. The crux of the problem is given an array of size "N"; you can make some operations to make the array good. In 1 operation you can delete any number from the array Good Array = Array that can be divided in good parts. Good Part = [i......j] is good if b[i] = abs(j-i) Solution :- Lots of observation + Partition DP + Brilliant optimization. I have created 1 hour in-depth video explaining the solution from scratch till the advanced level -> explaining the basics to DP till high level along with in-depth discussion of optimizations. Link to solution video - In the comments! We give free FAANG level DSA + OA training on weekend; link in the comments! #kumark #coding

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Stop watching news , jisko Jo milna hoga mil jayega hum kuch solve krte h phele news dekh lena fir Netflix dekh lena fir IND vs Pak kl morning m office chle , is weekend bi kuch ni kiya bolke 🤣🤣 Few top problems asked in data engineer interview : 1. How do you filter null values in PySpark? 2. How do you calculate the sum of a column in a PySpark DataFrame? 3. How do you concatenate two columns in a PySpark DataFrame? 4. How do you calculate the row number for each row in a PySpark DataFrame? 5. How do you drop rows with missing values in a PySpark DataFrame? 6. How do you calculate the average salary for each department in a PySpark DataFrame? 7. How do you identify and delete duplicate rows in PySpark? 8. If you have 100 columns in a table, how do you add "stu" at the start of every column name? #PySpark #BigData #DataScience #DataAnalysis #MachineLearning #DataEngineering

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"CODER BOLOGE, HEAVYCODER BANA DENGE!" The wait is finally over now, www.theheavycoder.com is now open and with lots of excitement I'm announcing the fresh new "LIVE BATCH: Spring Boot & Microservices" [WINTER-7] Syllabus, pre-requisites and everything can be found here by clicking on the below link:- https://lnkd.in/gTAAkiFz **jaldi jaldi join kar lo sab log** heavycoder banna hai! ❤️ #springboot #microservices #java #dsa

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Hey all, I have an update to share. Lately I have been recieving many queries from people looking for guidance. Here are some questions I often get: 1. Bro, product base company ke liye kya kya padhna hota hai? 2. Bro, resume ATS compliant kaise hoga? 3. Bro, system design mai kya kya puchte hai? 4. Bro, call nahi aa rahe, kya kare? 5. Bro, NIT/IIT se nahi hu to HR resume select nahi kar rahe. I completely understand these concerns—I had them myself just few months ago! To help you navigate this process, I have thought of doing 1:1. You can book a session with me to ask all your queries. It’s totally free, and I’ll do my best to assist you. You can find my Topmate link here: https://lnkd.in/gM5SMyDV. Let’s connect and tackle these challenges together! #CareerAdvice #JobPrep #InterviewTips #SystemDesign #ResumeHelp #Topmate

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Akshay Saini 🚀 #namastedev #akshaysaini #nodejs Thanks for explaining event loop and internal working of apache v8 engine so beautifully. output questions in episodes were awsm. waiting for advance project with best industry practices. Thanks a lot to clear all doubts!

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Imagine a college syllabus with🥳 ✅Low Level System Design ✅DSA ✅The art of Building API's ✅Client Side Security ✅Databases & Transactions Comment down if ve missed any😉 #softwareengineering #systemdesign #lowleveldesign

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Life phase of software developers: 1 year Experience: I will not be able to achieve this task on time because i am like a fresher. 5 years Experience: I have to complete this on time because lead will not happy if i am not able to do this. 10+ years experience: I have do my task even the task is your or not and task is in different technology because now i am lead no one will come to help me. Life is getting over in completing Task…..

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2 years ago, I cracked my Amazon SDE interview. Without a proper schedule or routine, it took me 6 months to finally succeed. If you’re in the same boat, here are some preparation tips for you: 📌 Know one AWS service well: Choose a service like S3 or EC2 and try to become an expert. 📌 Prepare for the Bar Raiser interview. Take mock interviews to simulate this unique Amazon specific round. 📌 Use numbers: When discussing projects, include exact figures like "optimized database queries resulting in a 50% reduction in response time.” 🔥 Bonus Tip: Talk to Amazon engineers. Their insights on projects, interview questions or resume tips will surely help you standout during the interviews. You can connect with these people on Preplaced. Just book a free strategy call here: https://lnkd.in/gEPkEWVR If you’re balancing work and study, having a mentor will help you focus on your preparation while they handle creating the plan, sharing resources, taking mock interviews and keeping track of your progress. ✨ Good luck with your preparation! #amazon #amazonsdeinterviews #collab #preplacedcollab #interviewpreparation #interviewtips

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My Linkedin is the cleanest it has been since 2020. No sponsored post, no TCS to FAANG story with link , no DSA and stuff. Even if someone tries to tag me in someone's post they have already blocked me. Yesterday someone DM'ed me "Look at this brainless influencer promoting this product and what not" . I clicked on the link just out of curiosity and nothing 😂 . You can say I am now using Linkedin premium with ad-blocking enabled. And I acheived that with just 5 posts 😂 😂 . If you are tired of these posts highly recommend this instead of going over and manually blocking hundreds of influencers. Better try being in their block list. PS : Aur yaar padhai karni hai to youtube pe aa jao. Yesterday we did a system design of whatsapp and hotstar : https://lnkd.in/guSFJkCP Finally I know some people are walking my path unko bolunga yaar negativity mat failao , if you feel an edtech is scam try building a better one. The only reason students fall for scams is because they don't have better option. Most students choose to pay 1 lakh for DSA as a last option kyunki unhe dhang ke mentors nhi mile.

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There are only 3 type of reviewers: 𝐓𝐡𝐞 𝐂𝐚𝐭𝐚𝐥𝐲𝐬𝐭 – Will approve the PR in seconds and say, “Prod mein dekhenge aggr kuch fttta hai toh 😂 " 𝐓𝐡𝐞 𝐈𝐧𝐡𝐢𝐛𝐢𝐭𝐨𝐫 – Will carefully review the PR, point out good coding practices and edge cases, and typically request 2-3 revisions. 𝐓𝐡𝐞 𝐁𝐥𝐨𝐜𝐤𝐞𝐫 – The worst of them all (Bhed ki khal mein Bhediye), they won’t let your PR through easily. Expect 10-15 revisions as they stubbornly push their viewpoint, no matter your approach. They will even find grammatical mistakes in summary of PR. I’m an Inhibitor – what about you? #humour

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I faced rejections in 4 interviews with Google, Udaan, Freshworks, and Postman: 👉🏼 The Google recruiter highlighted that my DSA code quality needs improvement. 👉🏼 The Udaan recruiter noted a lack of proper design patterns. 👉🏼 The Postman recruiter mentioned that my API modeling fell short. 👉🏼 The Freshworks recruiter pointed out redundant data schema and a failure to account for anomalies. These rejections made me realize the gaps in my preparation, especially in System Design skills. Thankfully my junior who is highly skilled in System Design helped me fill those gaps. Without his guidance, my preparation would have been much harder. That’s why I always recommend finding a mentor. And if you’re struggling to crack your interviews or even getting interview calls you can seek guidance from someone who understands the concepts and can guide you 1:1. You can connect with a mentor from Preplaced. Just book your free trial session with the mentor of your choice - https://lnkd.in/gu8kB7QU They won’t just guide you through a fixed curriculum but understand the exact areas you need help in, prepare a personalized plan, and provide 1:1 training until you land your dream job!🚀 #sponsoredpost #rejection #interview #sde #tech #mentorship #career #PreplacedCollab

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Today, I delved into the history of Node.js through Akshay Saini’s "Namaste Node.js" series. I'm truly amazed by the insights he has provided. 🌲Node.js is a cross-platform JavaScript runtime environment that operates on various operating systems, including Linux, Windows, and macOS. 🌲It is maintained by the OpenJS Foundation. 🌲Node.js can execute JavaScript code outside of web browsers, extending beyond just server creation. 🌲It features an event-driven architecture and supports asynchronous I/O. 🌲Ryan Dahl created Node.js in 2009. He initially used the SpiderMonkey JavaScript engine found in Firefox but switched to V8 within two days and never looked back. 🌲Ryan began developing Node.js independently, but Joyent, a company working on a similar project, hired him and funded his work. 🌲The project was originally named "Web.js" but was later renamed Node.js. 🌲The Apache HTTP Server used a blocking model, which led Ryan to develop a non-blocking server, resulting in Node.js's non-blocking I/O. 🌲In 2010, NPM was introduced as Node.js’s package manager and played a crucial role in its success. 🌲Node.js was initially available only for macOS and Linux, but Windows support was added in 2011 through a collaboration between Joyent and Microsoft. 🌲Isaac Schlueter, the creator of NPM, began maintaining Node.js in 2012. 🌲In 2014, a developer named Fedor created a fork of Node.js called io.js. 🌲In 2015, Node.js and io.js were merged to form the Node.js Foundation. 🌲In 2019, the JS Foundation and Node.js Foundation merged to create the OpenJS Foundation, which now maintains Node.js. #Node.js Akshay Saini 🚀

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Zomato Zomato India Deepinder Goyal Zomato has delivered orders to my address multiple times in the past, but recently, they failed to deliver my order and then canceled it. I had placed the order at night when I was hungry, and this is not the first time such an issue has occurred. Despite placing several successful orders to the same address before, they are now refusing to deliver. Is this a new way for Zomato to exploit customers? Additionally, the delivery partner and customer support were very rude. Please address this issue and take appropriate action. #CustomerService #Zomato #FoodDelivery #CustomerExperience #FoodTech #OnlineOrdering #CustomerSupport #ConsumerRights #Feedback #CustomerSatisfaction #ServiceMatters #FoodDeliveryIssues #CFBR #ConsumerAwarness #FoodDeliveryProblems #CustomerComplaints #Support #ZomatoIndia

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Crack your Next Android engineer Interview🎯 Are you applying for Android Developer roles (Intern, SDE1, SDE2) at startups but struggling to crack the interviews? Here’s what I’ve observed: There are lot of good startups are hiring for android developers. Many talented individuals get shortlisted but fall short due to a lack of preparation or understanding of what interviewers are looking for. This weekend i am doing a 1 hour session, where i will guide you how you can crack these android interviews We will discuss about all the rounds 1. Android basics 2. More advanced concepts of Android 3. System design 4. Manegerial round 🗓️ When? This Saturday (1-Hour Session) For more details and to book your seat, chekout this link here https://lnkd.in/gedBJ7aU 👉 Join this session and start your journey toward landing your dream role. Seats are limited, so secure yours today and let’s connect this weekend! Let’s make it happen! #android #androiddevelopment #interview #guide #mentoring #jobs #colleges #startsups #swiggy #ola #nykaa #physicswallah #rapido #webinar #crackinterview

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Latest Tech News 🚀 🔹 #TCS to Hire 40,000 Freshers: Plans a recruitment drive this year with a 4.5-7% pay increase, plus special programs for career growth. 🔹 #SEBI Warns Paytm: Issues over approvals for related-party transactions, prompting a 1% drop in shares. 🔹 #Apple’s India Sales: Reaches record $8 billion as the company shifts focus from China to India for manufacturing. 🔹 #GenAI at Work: Survey shows 85% of software professionals expect to use GenAI tools within two years, boosting innovation and software quality. 🔹 #BookMyCargo Logistics: Uses tech like blockchain and AI to improve supply chain solutions, aiming for pan-India presence. 🔹 #Cygnus Spacecraft: Completes mission and departs ISS, with Boeing’s Starliner still on board due to technical issues. 🔹 #Swiggy & #Zomato Fee Hikes: Increase platform fees by 20% in key markets to improve revenues. 🔹 #Flipkart’s Dark Stores: Plans to open 100 stores for faster delivery ahead of the Big Billion Days sale. 🔹 #Sam Altman on Unity: Reflects on unity post-Trump assassination attempt, calling for reduced rhetoric and increased cohesion. 🔹 #Chinese EV Brands Profitability: Only 19 out of 137 brands expected to stay profitable by 2030 amid a price war. 🔹 #OYO Turnaround: Reports a net profit of INR 100 Cr in FY24, planning an IPO and strategic focus on key tourism sectors. 🔹 #TCS Office Occupancy: Returns to pre-pandemic levels, highlighting recovery and growth in workplace presence. Stay informed on the latest tech developments! #TechNews #Startups #VCs #AI #Blockchain #Innovation #Funding #Latest #News #Jobs

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