Q: how would you solve a problem between colleagues?
Engineer Intern Interview Questions
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some medium/hard leetcode questions, the platform they used was codesignal
Let's say a triple (a, b, c) is a zigzag if either a < b > c or a > b < c. Given an array of integers numbers, your task is to check all the triples of its consecutive elements for being a zigzag. More formally, your task is to construct an array of length numbers.length - 2, where the ith element of the output array equals 1 if the triple (numbers[i], numbers[i + 1], numbers[i + 2]) is a zigzag, and 0 otherwise. Example • For numbers = [1, 2, 1, 3, 4], the output should be solution(numbers) = [1, 1, 0]. o (numbers[0], numbers[1], numbers[2]) = (1, 2, 1) is a zigzag, because 1 < 2 > 1; o (numbers[1], numbers[2] , numbers[3]) = (2, 1, 3) is a zigzag, because 2 > 1 < 3; o (numbers[2], numbers[3] , numbers[4]) = (1, 3, 4) is not a zigzag, because 1 < 3 < 4; • For numbers = [1, 2, 3, 4], the output should be solution(numbers) = [0, 0]; Since all the elements of numbers are increasing, there are no zigzags. • For numbers = [1000000000, 1000000000, 1000000000], the output should be solution(numbers) = [0]. Since all the elements of numbers are the same, there are no zigzags.
so tell me about yourself
Nothing difficult. The first question is about combination of HashMap and ArrayList, which the best answer should be LinkedHashMap but it's OK if you didn't know about this class. The second interview is to find the same element in two lists
Count number of duplicates in a binary search tree. Recursively? Iteratively?
Nothing unexpected: what is the difference between an interface and abstract class, find common ancestor of two nodes in a binary search tree.
Work Experience that was related to the position.
What are your areas of interest in technology - maybe some projects you've worked on in the past or some coursework that you've been interested in?
What would you have done differently if you could redo this assignment?
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