There is a cycle in a linked list if there is some node in the list that can be reached again by continuously following the next pointer.Internally, pos is used to denote the index of the node that tail's next pointer is connected to.Note that pos is not passed as a parameter. A database is an organized collection of data, stored and retrieved digitally from a remote or local computer system. Learn and Practice on almost all coding interview questions asked historically and get referred to the best tech companies https://interviewbit.com - This is also an excellent platform for coding interview preparation. Contribute to lehaSVV2009/leetcode development by creating an account on GitHub. Neither: InterviewBit. Python doesn't work in a ton of them. For more problems visit Leetcode (if you have time). The best thing is they have goal based structure where you can set your goal duration, hours you can spend per day, based on that you can solve problems. Begin coding in the site InterviewBit and practice with timing. → Testcases are wrong in many questions. InterviewBit website is bad. InterviewBit is similar to LeetCode, as well, but they are an Indian-based company, focused on Indian users. As someone who suffers from pretty bad interview nerves, I found it a lot more productive to practice the easy and mediums, and even return to already solved problems just to refresh your memory, rather than banging my head against the more difficult questions. The platform is gamified and will make coding fun for you. InterviewBit Academy is a 6 Months immersive online program that helps you develop your tech skills and gets you your dream job at no upfront cost. But InterviewBit has a great puzzle section, that's definitely something you should look at. Amazon / Eng TinyRobot You da real MVP. Learn and Practice on almost all coding interview questions asked historically and get referred to the best tech companies Easy and medium leetcode questions are fairly common in interviews, in my experience. My solutions for Leetcode, InterviewBit and Pramp. See problems in geeks for geeks and solve them. Nov 20, 2018 1 3 + View 1 more reply... Facebook. 1. Just do leetcode already. 3. Join InterviewBit now. What is Database? 2. I pay for Leetcode. Instagrаm Well, it helped me to get into G and FB, so... Nov 20, 2018 1. They compile their questions into tracks, such as systems design, programming, and databases, and in each one there are levels, which act as skills classifications. That's why I recommend leetcode over G4G. It's weird. Given head, the head of a linked list, determine if the linked list has a cycle in it.. Premium Leetcode access grants me access to company-specific problems so that I can study for a specific interview. 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