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"When two trains approach each other at a crossing, both shall come to a full stop and neither shall start up again until the other has gone. Imagine a Java code with two process/instances of the same program Train.class What's the problem and how do you fix it."

3 respuestas

It's a deadlock, solution is up to you.

Stupid answer. This doesn't even relate to a particular programming language. Everyone knows two "concurrent" threads can't get to the same execution point "at the same time". There will ALWAYS be an infinitesimal time difference of at least a tick at which point one will be able to take precedence and lock the other with whichever mechanism supported by the platform the programmer chooses, be it mutexes, critical sections, whatever. If you really answered that it just was a "deadlock", and still got hired, then that is proof of how easy is to get in.

To the person above me , it was never mentioned that both the trains arrive at the same time. It just says the train must come to a complete stop and wait for the other train to leave first. So yes it is a deadlock situation, and if you got hired I would be surprised !

SQL - Tengo varias personas con sus respectivos pesos, y un ascensor con una capacidad maxima. Seleccionar la ultima persona que entra en el ascensor

2 respuestas

Name three quality aspects you always check when you are implementing (or coding) a software product and explain why they are important for you.

2 respuestas

how would I implement a reversible map in java

2 respuestas

Given an array of size n with range of numbers from 1 to n+1. The array doesn’t contain any duplicate, one number is missing, find the missing number.

2 respuestas

Can you tell me a little about yourself? Why do you like to work here? Tell me about your most recent project? Any personal projects using Microsoft technology?

1 respuesta

Tell me about a time when you had to convince someone to do something they did not want to do?

1 respuesta

What statistical skills do you have?

1 respuesta

How do you introduce yourself?

1 respuesta
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