Intern Engineer Interview Questions

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“How can one implement a queue with only a stack implementation?”

“Implement integer division”

“Write a function to determine if a string is an integer.”

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“If you have a refrigerator in an isolated room (no heat in or out) and left the door to the refrigerator open, what would happen to the temperature to the room? Would it go up, down or say the same?”

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“Given an unsorted array, extract the max and min value using the least number of comparison.”

“Given a number n, give me a function that returns the nth fibonacci number. Running time, space complexity, iterative vs. recursive.”

“Can you think of an example of a scenario where you would want to use a tree with more degrees of branching than a binary tree?”

“string compression: aaabbbbcc ->a3b4c2”

“Explain tail recursion.”

“Given a word and a list of valid English words, return a list of all valid words that can be made by permuting the characters in the given word.”

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