Amazon Intern Interview questions - Free latest PlacementPapers, Interview Questions ....

sai6606 · 06-11-08, 11:19 AM

Amazon Intern Interview questions

Amazon Internship Interview Round 1

1 There are two urns A and B and an equal number of red balls and blue balls.How do u place the balls in the urns such that the probability of picking up the red ball is greater?

2 Two trains enter at the opposite sides of a tunnel of length L with speeds 'V'. A particle enters the tunnel at the same time with a speed 'v' and it vibrates in the tunnel[i.e. if it reaches the end of the tunnel then it comes back]. What is the position of the particle by the time the 2 trains meet?

3 Write an sql query to sort a table according to the amounts in a row and find the second largest amount.

4 How do you kill a process?

5 What is the functionality of a top command?

6 Given an array of size n+1 which contains all the numbers from 1 to n.Find the number which is repeated in O(n) time.How do you proceed with the same with floating numbers from 0 to 1 instead of 1 to n?

7 Design a datastructure to represent the movement of a knight on a chess board

8 Write an algorithm to traverse a knight covering all the squares on a chessboard starting at a particular point.
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Amazon Internship Interview Round 2

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What work are you expecting?

Tell me about any of your experience ?

sai6606 · 06-11-08, 11:22 AM

1)Place a red ball in a urn and all the further balls in the other urn.The probability for picking out the red ball is now greater than 0.5.
2)If v<=2V then the position is (v*L)/(2*V) from the starting point else it is 2*L -(v*L)/(2*V) from the starting point.

4)If we know the process then we can kill it by killall -9 "process name" else we can kill it using its process id obtained by the command ps -x by kill -9 "processid" .

5)Top command displays all the Linux tasks running at that particular time.It provides their running time and the resources used.

6)The number appearing 2 times is (sum of all the numbers in the array) - (sum of the numbers from 1 to n).
For floating numbers multiply it with 100 and proceed.

Post your solutions also ...

06-11-08, 11:19 AM	#1 (permalink)
sai6606 Senior Member Join Date: Nov 2008 Posts: 311	Amazon Intern Interview questions Amazon Intern Interview questions Amazon Internship Interview Round 1 1 There are two urns A and B and an equal number of red balls and blue balls.How do u place the balls in the urns such that the probability of picking up the red ball is greater? 2 Two trains enter at the opposite sides of a tunnel of length L with speeds 'V'. A particle enters the tunnel at the same time with a speed 'v' and it vibrates in the tunnel[i.e. if it reaches the end of the tunnel then it comes back]. What is the position of the particle by the time the 2 trains meet? 3 Write an sql query to sort a table according to the amounts in a row and find the second largest amount. 4 How do you kill a process? 5 What is the functionality of a top command? 6 Given an array of size n+1 which contains all the numbers from 1 to n.Find the number which is repeated in O(n) time.How do you proceed with the same with floating numbers from 0 to 1 instead of 1 to n? 7 Design a datastructure to represent the movement of a knight on a chess board 8 Write an algorithm to traverse a knight covering all the squares on a chessboard starting at a particular point. www.placementpapers.us Amazon Internship Interview Round 2 Why do you like to work with us? What work are you expecting? Tell me about any of your experience ?

06-11-08, 11:22 AM	#2 (permalink)
sai6606 Senior Member Join Date: Nov 2008 Posts: 311	Re: Amazon Intern Interview questions Solutions 1)Place a red ball in a urn and all the further balls in the other urn.The probability for picking out the red ball is now greater than 0.5. 2)If v<=2V then the position is (vL)/(2V) from the starting point else it is 2L -(vL)/(2*V) from the starting point. 4)If we know the process then we can kill it by killall -9 "process name" else we can kill it using its process id obtained by the command ps -x by kill -9 "processid" . 5)Top command displays all the Linux tasks running at that particular time.It provides their running time and the resources used. 6)The number appearing 2 times is (sum of all the numbers in the array) - (sum of the numbers from 1 to n). For floating numbers multiply it with 100 and proceed. Post your solutions also ...