Pergunta de entrevista da empresa ECI Telecom

First Pair: Describe your last project. Design a chess Game in object oriented. Design a coffee machine in object oriented. What is the complexity of inserting a stream of data into a vector(they meant at any position like the end, and not in the middle). follow up question: can you make it more efficient. Second Pair: "Two robots on a line" question. A synchronise question.