Digital Design Engineer

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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 design a system utility to find duplicate files on a given file system. The utility should traverse a directory, compute a hash for each file, and identify duplicates based on these hashes. Discuss the algorithmic complexity, potential optimizations, and trade-offs between CPU and RAM usage. What is the theoretical best performance we can achieve?

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Describe a time you had to work in an ambiguous environment. What was the situation, what actions did you take, and what was the result? Be specific and provide details about the ambiguity you faced. For example: Lack of Clear Requirements: Describe a project where the initial requirements were poorly defined or constantly changing. How did you navigate the uncertainty and ensure the project moved forward? Conflicting Information: Share an experience where you received conflicting information from different stakeholders. How did you reconcile these discrepancies and make informed decisions? Unclear Goals: Tell me about a time when the overall goals of a project or task were not well-defined. How did you work to clarify the objectives and achieve a successful outcome? Limited Resources: Describe a situation where you had to work with limited resources (time, budget, personnel). How did you prioritize your efforts and make the most of what you had available? New Technology or Domain: Share an experience where you had to work with a new technology or in a domain where you had limited prior experience. How did you quickly learn and adapt to the unfamiliar environment?