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Interview Process   |   Interview Puzzles / Aptitude
Organization : Oracle
Position : Software Engineer

Oracle Interview Process

I applied for the position of Software Engineer from my university and the process took almost three weeks. Finally, I was interviewed at Oracle. There are four rounds in total at Oracle - Programming Round, 2 Technical Rounds, and Manager Round.

Before all those rounds, we had an online test on our campus which consisted of questions related with basic programming, data structures, OS and aptitude.

Round 1 - Programming Round
It is pretty easy to clear this programming round. If you have studied during your college time, you will be able to clear it easily. I did not find any difficult questions and was able to complete the test easily.

Round 2 - First Technical Interview Round
Get your arrays and strings in order as this is what I was asked majorly about in this round. The only thing I did not like in this round was that there was no uniformity in the questions and they were random. It seemed the interviewer was not interested in the process or was not present there totally. Some questions:
1) There is an array that comprises of 1s and 0s. Shift all the 1s to the right and all the 0s to the left.
2) Reverse only the sequence of words in the string.

Round 3 - Second Technical Interview Round
The interviewer first asked me about the questions that I was asked about in the previous round. Again, I felt that the interviewer was not interested as he kept on moving out while he had asked me to code towers of Hanoi. Some more questions that were asked:
1) A sorted array has numbers from 1 to 100. A number is missing. Find the number without traversing the full array.
2) Reverse only the sequence of words in the string.

Round 4 - Manager Round
Don't expect anything unusual in this round. Some questions of data structures were asked but no need to be surprised as the focus was more on knowing about you and your potential. Where do you see yourself after five years? Why Oracle? What are your future plans? Questions like this were asked.

How to crack Oracle Interview

Frankly, I did not find the interview process difficult. I was comfortable in answering most of the questions. The online test was the easiest I have ever given. This is the reason why maximum of the students who appeared in the test were chosen for interview.

The programming round is easy. All you will have to apply is simple codes and programming as the problems were not complex.

First technical round was pretty easy too. Second technical round can be weighed a bit more on the difficult side in comparison. Prepare well on strings and arrays and data structures. Most of the questions were asked covering these topics only.

The manager round is nothing to worry about. Don't be nervous is what I will suggest. Just answer whatever is being asked and try to impress the interviewer. Do negotiate when the offer is made.

I feel if you prepare nicely, you will definitely crack the interview. I feel it is easy compared to many other companies. Wishing luck to all the candidates.

Thanks Sahu for sharing the details of your interview.
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Interview Marble Logic Puzzle

You are given a set of scales and 12 marbles. The scales are of the old balance variety. That is, a small dish hangs from each end of a rod that is balanced in the middle. The device enables you to conclude either that the contents of the dishes weigh the same or that the dish that falls lower has heavier contents than the other.
The 12 marbles appear to be identical. In fact, 11 of them are identical, and one is of a different weight. Your task is to identify the unusual marble and discard it. You are allowed to use the scales three times if you wish, but no more.

Note that the unusual marble may be heavier or lighter than the others. You are asked to both identify it and determine whether it is heavy or light.

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Popular Logical Brain Teaser

A couple had to take shelter in a hotel for they could not proceed their journey in the rain. Having nothing to do at all, they started playing cards. Suddenly there was a short circuit and the lights went off. The husband inverted the position of 15 cards in the deck (52 cards normal deck) and shuffled the deck.

Now he asked his wife to divide the deck into two different piles which may not be equal but both of them should have equal number of cards facing up. There was no source of light in the room and the wife was unable to see the cards.

For a certain amount of time, she thought and then divided the cards in two piles. To the husband’s astonishment, both of the piles had equal number of cards facing up.

How did she do it?

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Awesome Probability Logic Riddle

You need to divide 50 marbles(25-red and 25-blue) into two boxes such that the probability of picking red marble is maximized.

Following conditions need to hold true :
1. None of box is empty
2. All the marbles must be in one of two boxes.

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Measure Water Supply Brain Teaser

You had an infinite supply of water and a 5 ml and 3 ml gallons.

How would you measure exactly 4 ml in least number of steps ?

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Tricky Logic Question

A claustrophobic person boards a train that is just about to enter a tunnel.

Which place will be the best for him to sit?

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Logic Fruits Riddle

There is a box full of fruits,
all but two are grapes,
all but two are apples,
and all but two are oranges.

How many fruits are in the box ?

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3 Gallon Brain Teaser

You have been given three jars of 3 liters, 5 liters and 8 liters capacity out of which the 8 liters jar is filled completely with water. Now you have to use these three jars to divide the water into two parts of 4 liters each.

How can you do it making the least amount of transfers?

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Spot The Difference Christmas Tree Riddle

Can you spot 5 differences in two Christmas tree below?

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Hard Logic Statement Riddle

There are a hundred statements.
1st person says: At least one of the statements is incorrect.
2nd person says: At least two of the statements is incorrect.
3rd person says: At least three of the statements are incorrect.
4th person says: At least four of the statements are incorrect.
100th person says: At least a hundred of the statements are incorrect.

Now analyze all the statements and find out how many of them are incorrect and how many are true?

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Hard Ten Boxes Interview Puzzle

You have ten boxes and an electronic weighing machine. In those ten boxes, you have chocolates. Each chocolate weigh 20 grams. But in one box the chocolates are defective and each weigh 19 grams exactly.

Now you can weigh in the electronic weighing machine but you can use that machine just once. How will you find out which box has the defected chocolates.

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