Data Structures Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Data Structures Interview Questions

Questions Answers Views Company eMail

What does the dummy header in the linked list contain?

1101

How many pointers are necessary to implement a simple linked list?

1079

How can you insert a node at the end of linked list?

814

Differentiate between singly and doubly linked lists?

925

What is the difference between the hash table and hash map?

934

How does hashset work internally in java?

939

For addition and deletion. Which one is most preferred: array list or linked list?

844

Is it possible to make an array volatile in java?

849

For searches. Which one is most preferred: array list or linked list?

881

What is a spanning tree?does the minimum spanning tree of a graph give the shortest distance between any 2 specified nodes?

834

Which is the simplest file structure?

954

Differentiate between queue and deque.

898

Differentiate between hashset and hashmap.

910

Differentiate between iterator and enumeration.

857

Differentiate between hashset and treeset.

934

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Un-Answered Questions { Data Structures }

What is the Role of push() and pop() method?

958

What are the major data structures used in the network data model?

1023

Is pointer a variable?

838

What is a hashmap in c?

833

Does treemap preserve order?

798

Explain what do you mean by insertion sort, bubble sort and selection sort? Also, explain the differences among the functionalities of the three sorts.

990

Which interfaces are implemented by linkedlist?

888

Give one example of right rotation.

870

What is a matrix?

967

What happens if we put a key object in a hashmap which exists?

895

What is entryset in hashmap?

863

Does linked list allow duplicates?

828

What is difference between rb tree and avl tree?

834

Can a stack be described as a pointer? Explain.

854

Write a program for reversing the Single Linked List?

1048

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