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

Google Interview Process

I applied for the designation of Software Engineer through my university. The process took two weeks and then I was interviewed at Google. Since it was a campus placement, there was one written test and three technical rounds of forty five minutes each.

Round 1 - Written Test
The written test as standard and not much different from the usual stuff. There were 18 questions in total and all of them were based on the basic coding knowledge.

Round 2 - First Technical Interview Round
This is the first technical round and thus you can expect basic coding related problems. Two questions were asked and the round lasted for forty five minutes. One of the problem:
Q1. Approximation algorithm for NP hard problem.

Round 3 - Second Technical Interview Round
The level of difficult was increased. This round also consisted of two technical questions and the time limit was the same as before. This time, the problems were based on data structures. Both of them were based on data structures in fact and they were complicated.

Round 4 - Third Technical Interview Round
This was another difficult technical round. I am surprised I was able to answer them by the end of time. The reason is that they gave me hint while I was stuck in one of the string manipulation related problem.
Q1. How to solve a certain NP hard problem in O(n^2) time complexity.

Then, the offer was made and no negotiations were required/possible.

How to crack Google Interview

I can't reveal all of the actual questions here to help you crack the Google Interview but I can guide you in the right direction supposedly.

Since, I was on campus placement, the process was a bit short for me. Other people can expect 4-5 technical rounds. However the format will remain same I guess. You might have a telephonic interview as well before being called in for the technical rounds.

The written test was simple and I was able to complete all the questions in the given time. Thus if you know the basics, there should not be any difficulty. But that is just a beginning. As the difficult technical rounds sit ahead.

If you want to crack Google Interview, you must study and prepare for questions related with String manipulation, data structures and large scale system designs. Even if you think you might not be able to find solution for a problem, give your best shot as if you are stuck on the right track, they might help you out in moving forwards.

The people are really nice and being interviewed at Google was one of the best interview experience for me. You will get a lot to learn even if you are not selected.

My best wished to all the candidates.

Thanks Anmol for sharing the details of your interview.
Send more details and your personal experiences info@gpuzzles.com
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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?

By Admin
  • Views : 80k+
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Spatial Trivia Physics Puzzle

As shown in picture, there are four gears with the following specification
* Gear A has 60 teeth
* Gear B has 40 teeth
* Gear C has 20 teeth
* Gear D has 60 teeth
* Every minute, Gear B makes 15 complete turns.

What is the relative speed of Gear A and Gear B?

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Crossing Bridge Brain Teaser

Four friends need to cross a dangerous bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

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Famous Lion Tamer Interesting Puzzle

You are trapped with a lion in a cage with 1 unit as its radius. Both you and the lion can run effortlessly at the speed of one unit.

1) The lion is quite hungry and all he wants is to catch you and eat you up. Will he be able to do that?
2) If yes, how long do you have till he does that?

By Admin
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No Death Penalty For Kill Riddle

Ramsay was killed by Sansa in front of everyone but the judge was not sure how to punish Sansa. Why is the judge confused?

  • Views : 90k+
  • Sol Viewed : 30k+

Popular Interview Problem

I have two rectangular bars.

They have property such that when you light the fire from one end , it will take exactly 60 seconds to get completely burn.
However they do not burn at consistent speed (i.e it might be possible that 40 percent burn in 55 seconds and next 60 percent can burn in 10 seconds).

Problem is : How do you measure 45 seconds ?

By Admin
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The Elf Logical Puzzle

A wicked sorcerer felt enmity towards elf and thus he chooses four among the rest of the elf's and concealed them. The elves are concealed in the ground in a manner that apart from their head the rest of their body was underneath the ground. The elf's are unable to move their body and can only see in that direction that they are facing. All the elf's are concealed underground in such a way that they form a straight line and among those four elf's that are concealed underground one of the elf is detached form the other three elf's via wall. The entire elf's are in the same direction. The elf that is the furthest can only see the heads of its friends in front and a wall. The elf that is second last can only see one head of his friend and a wall. The second elf can only view the wall. The elf can see nothing.
The sorcerer understands the situation and tells the elf's that he has placed hats over their heads. Among the hats places two hat are blue and the other two are red. Among all the four elfs one of the elf has to guess that which colour hat is he wearing. If the elf answers correctly then he shall be set free or else he will have to dig beneath the ground till the very last.

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Famous Probability Puzzle

This is a famous probability puzzle in which you have to choose the correct answer at random from the four options below.
Can you tell us whats the probability of choosing correct answer in this random manner.

1) 1/4
2) 1/2
3) 1
4) 1/4

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Very Hard Math Question

There stand nine temples in a row in a holy place. All the nine temples have 100 steps climb. A fellow devotee comes to visit the temples. He drops a Re. 1 coin while climbing each of the 100 steps up. Then he offers half of the money he has in his pocket to the god. After that, he again drops Re. 1 coin while climbing down each of the 100 steps of the temple.

If he repeats the same process at each temple, he is left with no money after climbing down the ninth temple. Can you find out the total money he had with him initially?

By Admin
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Riddle 1 - 1 !=3

Can you move four matchsticks to make the equation true?

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