Principal Staff Software Engineer, Systems Infrastructure

LinkedIn

You are given a string s and a dictionary wordDict containing a list of words. Determine if s can be segmented into a space-separated sequence of one or more dictionary words. You may reuse words in the dictionary. Solve this using backtracking. For example: Input:** s = leetcode, wordDict = [leet, code] Output: true (because leetcode can be segmented as leet code) Input:** s = applepenapple, wordDict = [apple, pen] Output: true (because applepenapple can be segmented as apple pen apple) Input:** s = catsandog, wordDict = [cats, dog, sand, and, cat] Output: false Implement a function wordBreak(s, wordDict) that takes the string s and the dictionary wordDict as input and returns true if s can be segmented into a space-separated sequence of dictionary words, and false otherwise. Explain the backtracking approach you employed, including the base cases and recursive steps. Focus on the efficiency of your solution and potential optimizations. For instance, can you improve performance by using memoization to store the results of subproblems? Analyze the time and space complexity of your solution, considering both the backtracking approach and any optimizations you might introduce. What are the limitations of using a pure backtracking strategy for this problem, especially with very long input strings? Explore how dynamic programming could be used as an alternative approach and discuss its advantages in terms of performance and scalability.

LinkedIn

Let's design the LinkedIn feed. Consider the user experience, key features, scalability, and personalization aspects. For instance, how would you prioritize content from connections versus suggested content? How would you handle different content types like text, images, videos, and articles? How do you design a system to ensure that the feed remains responsive even with millions of active users? How would you personalize the feed to show users content they are most likely interested in, and what data would you use to achieve this personalization? Finally, how would you prevent the spread of misinformation or harmful content within the feed?

LinkedIn

Okay, let's explore your interest in LinkedIn. To help me understand your motivations, could you elaborate on why you are particularly interested in working at LinkedIn? I'm looking for specific reasons beyond just wanting a job. For instance, are you drawn to LinkedIn's mission of connecting professionals? Perhaps you're excited about the scale of the platform and the impact you could have on millions of users? Or maybe you admire the company's culture and values, such as its emphasis on transformation, integrity, collaboration, and results. It would be helpful to hear about specific projects or initiatives at LinkedIn that resonate with you. Have you been following LinkedIn's work in AI, education, or small business support? Are there any particular LinkedIn products that you find innovative or impactful? Are you inspired by the work of a specific team? Furthermore, how do you see your skills and experience aligning with LinkedIn's goals? What unique contributions do you believe you can make to the company, and how would working at LinkedIn help you grow professionally? I'm interested in understanding how your personal values align with LinkedIn's core principles, and why you believe this is the right place for you to advance your career.