Interview Questions and Answers for 'Dell' | Search Interview Question

Interview Questions and Answers for 'Dell' - 8 question(s) found - Order By Newest

Frequently asked at Manhattan Associates ( Based on 2 feedback )

Q1. What is a Lambda Expression ? What's its use ?

Ans. Its an anonymous method without any declaration.

Lambda Expression are useful to write shorthand Code and hence saves the effort of writing lengthy Code.

It promotes Developer productivity, Better Readable and Reliable code.

Sample Code for lambda

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve java java8 lambda expression architecture Asked in 58 Companies expert frequent}

Try 1 Question(s) Test

Advanced level question frequently asked in US based companies. Recently asked in EMC and Intuit.

Q2. Can you provide some implementation of a Dictionary having large number of words ?

Solution

Ans. Simplest implementation we can have is a List wherein we can place ordered words and hence can perform Binary Search.

Other implementation with better search performance is to use HashMap with key as first character of the word and value as a LinkedList.

Further level up, we can have linked Hashmaps like ,

hashmap {
a ( key ) -> hashmap (key-aa , value (hashmap(key-aaa,value)
b ( key ) -> hashmap (key-ba , value (hashmap(key-baa,value)
....................................................................................
z( key ) -> hashmap (key-za , value (hashmap(key-zaa,value)
}

upto n levels ( where n is the average size of the word in dictionary.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve java collections hashmap binary search search algorithm advanced architecture data structure Asked in 6 Companies frequent}

Try 1 Question(s) Test

Very frequently asked if being interviewed for hibernate. Frequently asked in Tata Consultancy (TCS) and Overstock.com

Q3. Difference between load and get ?

Hibernate

Ans. If id doesnt exist in the DB load throws an exception whereas get returns null in that case.get makes the call to DB immediately whereas load makes the call to proxy.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve hibernate Asked in 16 Companies basic frequent}

Q4. What is the use of constructors in Java ?

Core Java

Ans. Constructors are used to initialize the state of an object. If there are no constructor , objects won't have any initialized state and hence it's elements may contain garbage values. If the memory were used as is, the behavior of the object would also be unpredictable.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve constructor Asked in 5 Companies}

Q5. Solve the producer and consumer problem

Operating System

^{This question was recently asked at 'Dell'.This question is still unanswered. Can you please provide an answer.}

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve producer consumer problem multi-process synchronization problem Asked in 1 Companies}

Q6. Explain debugging

Process

^{This question was recently asked at 'Adella software'.This question is still unanswered. Can you please provide an answer.}

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve debug Asked in 1 Companies basic}

Q7. What is an Interface ?

Core Java

Ans. The interface is a mechanism to achieve abstraction. Interfaces can have abstract methods and variables. It cannot have a method body.

Sample Code for interface

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve interface Asked in 1 Companies basic frequent}

Q8. Which is the best collections for maintaining elements in an order ?

Core Java

^{This question was recently asked at 'Dell'.This question is still unanswered. Can you please provide an answer.}

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Asked in 1 Companies}

Search Interview Questions

Help us and Others Improve. Please let us know the questions asked in any of your previous interview.