Software Engineer, Product

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You are given a binary tree. Write a function to flatten the binary tree into a linked list in-place. The linked list should be in the same order as a pre-order traversal of the binary tree. This means that for each node, the right pointer should point to the next node in the pre-order traversal, and the left pointer should be null. For example, consider the following binary tree: 1 / 2 5 / 3 4 6 After flattening, the tree should look like this: 1 -> 2 -> 3 -> 4 -> 5 -> 6 Each node's right pointer points to the next node in the pre-order traversal, and all left pointers are null. Clarifications: The function should modify the tree in-place. The pre-order traversal should be followed. The left pointers of all nodes should be set to null after flattening. Could you provide an efficient algorithm to accomplish this, and what is the time and space complexity of your solution?

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Let's delve into the realm of networking. Imagine you are tasked with designing a network for a growing company with three distinct departments: Engineering, Marketing, and Sales. Each department has unique needs and security requirements. The Engineering department requires high bandwidth for data transfer and code compilation, the Marketing department needs access to various social media platforms and marketing tools, and the Sales department needs secure access to customer data and CRM systems. Furthermore, the company wants to implement a guest network for visitors. The network should be designed with scalability, security, and performance in mind. Considering these requirements, address the following: Describe the network topology you would choose and why. Explain the advantages and disadvantages of your chosen topology in this scenario. Outline the IP addressing scheme you would implement. Include subnetting details and justification for your choices. Discuss the security measures you would implement to protect each department's data and ensure network security. Elaborate on firewall rules, access control lists (ACLs), and intrusion detection/prevention systems (IDS/IPS). Explain how you would segment the network to isolate the guest network from the internal network. What specific technologies or configurations would you use to achieve this? Describe how you would ensure high availability and redundancy in the network design. What measures would you take to prevent single points of failure? Outline the routing protocols you would use and why. How would you configure them to optimize network performance and ensure efficient data delivery? Discuss how you would monitor and manage the network to ensure optimal performance and security. What tools and techniques would you employ for network monitoring and troubleshooting?

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Tell me about a time you had a conflict with a colleague. What was the nature of the conflict, and how did you approach resolving it? What was the outcome, and what did you learn from the experience? For example, perhaps you disagreed on the best approach to a technical problem, or maybe there was a misunderstanding about responsibilities. How did you communicate your perspective, and how did you listen to theirs? What steps did you take to find a mutually agreeable solution? Did you involve a mediator or supervisor, or were you able to resolve it yourselves? What were the key takeaways from that situation, and how have you applied those lessons to future collaborations? It is important to show that you can handle conflict well.