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Senior applications developer Interview Questions

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We have a pond containing a single bacterium. The number of bacteria double every 5 minutes, and the pond is full of them in 24 hours. If we started with the same pond but two bacteria, how long will it take to fill the pond?

4 Answers

I struggled with this a bit and got close. I believe answer is: 23:55

This is a clear case of Geometric progression. Find the nth term Tn1 = a*r^(n-1). where n = (24 * 60)/5,a = 1 and r=2. when the initial value (a) = 2, the values become n = ?, a = 2 and r = 2. Since Tn1 = Tn2, Equate the RHS of both the equation. Since the base are equal, equate the powers, doing so will give the n value. When n is convert into minutes one get 23 hrs 55 minutes.

this is easy, you don't need all the math. The pond was half full five minutes before, so it's 23:55

There are 10 stacks of 10 coins each. 9 of the stacks contain coins that weigh 1g each. The other stack contains coins of 2g each. The coins look the same. We have a scale that we can get a measurement of grams from, not a balance. We can use the scale exactly once to weigh anything here from a single coin to all of them. How can we determine which stack is the 2g coins?

4 Answers

Onsite - 1. You have a computer with seven core cpu, you have a file and you have to read each line of the file, check if it has the word UPS in it, if so , then write it to a file, if there is no word as UPS in it, write that line to a different file. 2. An amount will be given as input. The amount will have some cents in change. So, for example $29.90. For the change, you have to start using the highest denomination and go to the lowest until the change value is completely met.

2 Answers

How would you bypass change management processes to dynamically change OS JCL streams?

2 Answers

The most unexpected question was whether I had thought of using NoSQL databases.

1 Answer

What is the most efficient way to implement a Fibonnacci calculation

1 Answer

How to convert int to Roman numerals and vice versa

1 Answer

They were interested in my technical versatility and team capabilities & long term plans

1 Answer

I had a decent online coding portfolio so I didn't get too many technical questions. They were basically about my attitude and personal work ethic.

1 Answer

Having to recite some silly technical reference that I never use to build web applications in .NET. Some of the participants usually from India will just grab a question from a text book.That would be OK if I were in school and reading chapters from that book preparing for an exam or quiz.

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