Senior Networking Formal Verification Engineer

Google

Let's explore some string manipulation algorithms. Suppose you are given a string s and you need to reverse the order of words in the string. Each word is separated by a single space, and there are no leading or trailing spaces. For example, if the input string s is the sky is blue, the expected output is blue is sky the. Write a function that takes a string s as input and returns a new string with the words in reversed order. Explain your approach. What is the time and space complexity of your algorithm? Provide example test cases to demonstrate that your function works correctly, including edge cases such as an empty string or a string with only one word. As a follow-up, consider a more complex scenario where the input string s might contain leading or trailing spaces, or multiple spaces between words. How would you modify your algorithm to handle these cases while still producing the correct reversed word order? For instance, given the input hello world , the output should be world hello. Describe the changes needed and analyze the updated time and space complexity.

Google

Let's build an infinite scroll web page. Describe the key components, implementation details, and optimization strategies you would employ to create a smooth and efficient user experience. To clarify the requirements, imagine you are tasked with displaying a large dataset of images fetched from a remote server. The goal is to load and render these images as the user scrolls down the page, providing a seamless browsing experience without overwhelming the browser or causing performance issues. Specifically, address the following: Data Fetching: How would you handle fetching data in chunks from the server? What API endpoints and request parameters would you use? Consider how to manage the loading state to provide visual feedback to the user. Rendering: What techniques would you use to efficiently render the images? Consider the use of virtual DOM, lazy loading, and image optimization techniques. Scroll Handling: How would you detect when the user has scrolled to the bottom of the page and needs more data to be loaded? How would you prevent multiple requests from being triggered simultaneously? Performance Optimization: What strategies would you implement to optimize the performance of the infinite scroll? Consider techniques such as debouncing scroll events, caching data, and preloading images. Error Handling: How would you handle errors that might occur during data fetching or rendering? How would you display error messages to the user? Provide code snippets (in JavaScript, React, or any other relevant language) to illustrate your approach. Discuss any potential challenges or trade-offs involved in implementing an infinite scroll and how you would address them.

Google

Tell me about a time you had to work with a signed contract. Describe the situation, your role, and the outcome. What were the key clauses or provisions that were most relevant to the situation? What challenges, if any, did you face in interpreting or adhering to the contract terms? How did you ensure that your actions were in compliance with the contract, and what steps did you take to mitigate potential risks or disputes? For example, consider a scenario where you were managing a project with a vendor, and the contract outlined specific deliverables, timelines, and payment terms. A conflict arose when the vendor failed to meet a critical deadline, potentially impacting the project's overall timeline and budget. How did you leverage the contract to address the issue, protect your company's interests, and find a resolution that was fair to both parties? Or, imagine you were involved in a negotiation where the other party wanted to change certain terms after the contract was signed. How did you handle the situation, ensuring that any modifications were properly documented and agreed upon by all parties involved? What did you learn from this experience, and how has it influenced your approach to working with contracts in subsequent projects or situations?