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Interview Questions and Answers for 'Search' - 15 question(s) found - Order By Newest

Advanced level question frequently asked in US based companies. Recently asked in EMC and Intuit.
  Q1. 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.

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   Like         Discuss         Correct / Improve     java   collections   hashmap   binary search   search algorithm   advanced   architecture   data structure     Asked in 6 Companies        frequent
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 Q2. Design a Data Structure for a full text Search ?Design
 This question was recently asked at 'Myntra'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     Full Text Search  Data Structure     Asked in 1 Companies      expert

 Q3. What are the pre-requisite for the collection to perform Binary Search ?
Ans. 1. Collection should have an index for random access.
2. Collection should have ordered elements.

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   Like         Discuss         Correct / Improve     java   collections   search algorithm   search   binary search   at&t      intermediate

 Q4. Explain various Searching and Sorting Algorithms ?Algorithm
 This question was recently asked at 'HeadStrong,ServiceNow'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     Search Algorithm  Sorting Algorithm     Asked in 2 Companies      basic        frequent

 Q5. Write a Program to print factorial of a number using recursionCore Java
Ans. public class BuggyBread {
public static void main(String args[]) {
System.out.println(factorial(5));
}

private static int factorial(int number){
if(number == 1){
return 1;
} else {
return number * factorial(number - 1);
}
}
}

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   Like         Discuss         Correct / Improve     recursion     Asked in 25 Companies

 Q6. Can we use Ordered Set for performing Binary Search ?
Ans. We need to access values on the basis of an index in Binary search which is not possible with Sets.

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   Like         Discuss         Correct / Improve     java   sets   set   collections   binary search

Frequently asked to Fresh graduates.
 Q7. Write a program to implement Binary search ?Core Java
Ans. http://algs4.cs.princeton.edu/11model/BinarySearch.java.html

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   Like         Discuss         Correct / Improve     binary search  search     Asked in 5 Companies      basic        frequent
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 Q8. What is Spring Boot ?Spring Boot
Ans. Spring Boot is Springs convention-over-configuration solution for creating stand-alone, production-grade Spring-based Applications.

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   Like         Discuss         Correct / Improve     Spring Boot     Asked in 7 Companies

  Q9. What is Maven ?Maven
Ans. Maven is a build automation tool used primarily for Java projects.

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   Like         Discuss         Correct / Improve     maven  build     Asked in 6 Companies      basic        frequent

 Q10. Do you feel that its useless to define hashCode method for a class ?Core Java
Ans. Yes its useless if we are not going to use its objects within Hash collection, For example - HashSet , HashMap. HashCode is used internally by these collections for Search.

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   Like         Discuss         Correct / Improve     hashcode  hash collections  search

 Q11. What data structure will you use if we have to search an element in million of elements ?Data Structure
 This question was recently asked at 'Microsoft'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     Search     Asked in 1 Companies

 Q12. How Cassandra provides better Read performance than Oracle Indices ?Database
Ans. Cassandra uses Hash Search which provides a look time of O(1) whereas Oracle Indices uses Binary Search that provide a lookup time of O(Log n).

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   Like         Discuss         Correct / Improve     cassandra  hash search  hash search vs binary search

 Q13. How different is the Search algorithm when we query Cassandra Tables and When we query Oracle Tables ?Cassandra
Ans. Relational Database uses linear search if we don't query using indices. Performance for linear search is O(n). If indices have been used , relational database uses binary search. Performance for binary search is O(Log n).

Casandra uses hash search. Performance for Hash Search is O(1).

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   Like         Discuss         Correct / Improve     cassandra vs oracle  nosql vs relational  search algorithm

 Q14. Explain Binary SearchAlgorithm
 This question was recently asked at 'Nagarvision'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     search  binary search     Asked in 1 Companies      basic        frequent

 Q15. What are the disadvantages of binary search trees? Algorithm
 This question was recently asked at 'ServiceNow'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     binary search tree     Asked in 1 Companies

 Q16. Binary Search requires that the collection should beAlgorithm
a. Sorted in Ascending Order
b. Sorted in Descending Order
c. Sorted in any Order
d. Unsorted

Ans.c. Sorted in any Order

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