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Data Structure Interview Questions and Answers For Freshers Part-2

Be First!

Data Structures11. What is a string?

A sequential array of characters is called a string.

12. What is Brute Force algorithm?

Algorithm used to search the contents by comparing each element of array is called Brute Force algorithm.

13. What are the limitations of arrays?

i)Arrays are of fixed size.
ii)Data elements are stored in continuous memory locations which may not be available always.
iii)Adding and removing of elements is problematic because of shifting the locations.

14. How can you overcome the limitations of arrays?

Limitations of arrays can be solved by using the linked list.

15. What is a linked list?

Linked list is a data structure which store same kind of data elements but not in continuous memory locations and size is not fixed. The linked lists are related logically.

16. What is a node?

The data element of a linked list is called a node.

17. What does node consist of?

Node consists of two fields:data field to store the element and link field to store the address of the next node.

18. What is a queue ?

A Queue is a sequential organization of data. A queue is a first in first out type of data structure. An element is inserted at the last position and an element is always taken out from the first position.

19. What are the types of Collision Resolution Techniques and the methods used in each of the type?

Open addressing (closed hashing),The methods used include:Overflow block
Closed addressing (open hashing),The methods used include:Linked list,Binary tree

20. What are the methods available in storing sequential files ?

Straight merging, Natural merging, Polyphase sort, Distribution of Initial runs.

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