Developer Intern Interview Questions

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Technical: 1. https://www.facebook.com/hackercup/problem/403525256396727/ 2. http://www.geeksforgeeks.org/count-ways-reach-nth-stair/ 3. In english alphabet "a-z and A-Z" letters. As we know all numbers can be represented by a fibonacci number. 1 2 3 5 8 13 21 34 55 89 Suppose 6 = 5 + 1, can be encoded as 1001 16 = 13 + 3 = 100100 4 = 3 + 1 = 101 Similarly, all the letters "a-z and A-Z" should be converted to ASCII number then convert them to Fibonacci encoded number Then read decode them back to origonal character. H E L L O ASCII values of all the letters from (HELLO) Then covert them to corresponding binary values e.g H = 72 = 55 + 13 + 3 + 1 = 100100101 And add "1" (number 1) to end of all charcter to find out the number ends there. So H = 100100101 + 1 = 1001001011 (Not mathematical add, string add or append) 4. What you like to do in leisure time? 5. What you have done something interesting beyond your scope? 6. How do you manage a day in your place when you are heavily loaded? 7. Why are you looking for a change? ....
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Senior Software Engineer

Interviewed at Honeywell

4.1
Mar 27, 2017

Technical: 1. https://www.facebook.com/hackercup/problem/403525256396727/ 2. http://www.geeksforgeeks.org/count-ways-reach-nth-stair/ 3. In english alphabet "a-z and A-Z" letters. As we know all numbers can be represented by a fibonacci number. 1 2 3 5 8 13 21 34 55 89 Suppose 6 = 5 + 1, can be encoded as 1001 16 = 13 + 3 = 100100 4 = 3 + 1 = 101 Similarly, all the letters "a-z and A-Z" should be converted to ASCII number then convert them to Fibonacci encoded number Then read decode them back to origonal character. H E L L O ASCII values of all the letters from (HELLO) Then covert them to corresponding binary values e.g H = 72 = 55 + 13 + 3 + 1 = 100100101 And add "1" (number 1) to end of all charcter to find out the number ends there. So H = 100100101 + 1 = 1001001011 (Not mathematical add, string add or append) 4. What you like to do in leisure time? 5. What you have done something interesting beyond your scope? 6. How do you manage a day in your place when you are heavily loaded? 7. Why are you looking for a change? ....

Union of n arrays with x elements. Output common members contained in at least 2 arrays. Explain the complexity of the algorithm used. We have a digested server log with username, visited page and timestamp. Create a processing algorithm that will output the most visited page/areas in such a way that will match partial path as well. i.e. { { user: "user1", page="/home" }, { user: "user1", page="/home/account" }, { user: "user1", page="/home/account/profile" }, { user: "user1", page="/home/account/login" }, { user: "user2", page="/about" }, { user: "user2", page="/about/contact" }, { user: "user2", page="/home" } } the output user1 - home/account - home user2 - /about PS I'm rephrasing because I cannot recall exactly the question
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Software Developer

Interviewed at Booking.com

4.1
Jan 14, 2016

Union of n arrays with x elements. Output common members contained in at least 2 arrays. Explain the complexity of the algorithm used. We have a digested server log with username, visited page and timestamp. Create a processing algorithm that will output the most visited page/areas in such a way that will match partial path as well. i.e. { { user: "user1", page="/home" }, { user: "user1", page="/home/account" }, { user: "user1", page="/home/account/profile" }, { user: "user1", page="/home/account/login" }, { user: "user2", page="/about" }, { user: "user2", page="/about/contact" }, { user: "user2", page="/home" } } the output user1 - home/account - home user2 - /about PS I'm rephrasing because I cannot recall exactly the question

Describe oops concept.What you know about collections.3rd highest salary.find only numbers in alphanumeric string,remove space with in word in string.which is the best way to retrieve using hashmap.how to make immutable class,all methods of object class
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Software Engineer

Interviewed at Yodlee

3.6
Apr 3, 2016

Describe oops concept.What you know about collections.3rd highest salary.find only numbers in alphanumeric string,remove space with in word in string.which is the best way to retrieve using hashmap.how to make immutable class,all methods of object class

A rustic village contains one million married couples and no children. Each couple has exactly one child per year. Each couple wants a girl, but also wants to minimize the number of children they have, so they will continue to have children until they have their first girl. Assume that children are equally likely to be born male or female. Let p(t) be the percentage of children that are female at the end of year t. What is p(t)? "Can't tell" is a potential answer if you don't have sufficient information.
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Senior Java Developer

Interviewed at Acuitus

4.4
Apr 6, 2010

A rustic village contains one million married couples and no children. Each couple has exactly one child per year. Each couple wants a girl, but also wants to minimize the number of children they have, so they will continue to have children until they have their first girl. Assume that children are equally likely to be born male or female. Let p(t) be the percentage of children that are female at the end of year t. What is p(t)? "Can't tell" is a potential answer if you don't have sufficient information.

-given a binary tree, and a number in each node. Select the nodes that will maximize the overall sum such that if a node is selected its parent and children cannot be selected. Return the sum of the selected nodes. - The buildings in a a city can be represented in 2D by linear array. Given an array that represents the heights of the buildings such that the value in a specific index in the array indicates the height of the building at that location in the city. How much rain will gather in the city if it rains?
avatar

Software Engineer

Interviewed at Altera

3.4
May 6, 2015

-given a binary tree, and a number in each node. Select the nodes that will maximize the overall sum such that if a node is selected its parent and children cannot be selected. Return the sum of the selected nodes. - The buildings in a a city can be represented in 2D by linear array. Given an array that represents the heights of the buildings such that the value in a specific index in the array indicates the height of the building at that location in the city. How much rain will gather in the city if it rains?

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