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?

1151

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

1113

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

865

Differentiate between singly and doubly linked lists?

971

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

994

How does hashset work internally in java?

998

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

883

Is it possible to make an array volatile in java?

906

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

933

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

888

Which is the simplest file structure?

996

Differentiate between queue and deque.

950

Differentiate between hashset and hashmap.

977

Differentiate between iterator and enumeration.

902

Differentiate between hashset and treeset.

994

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Un-Answered Questions { Data Structures }

What does quick sort do?

868

What is meant by int?

985

List some applications of multilinked structures?

882

Does linked list allow duplicates?

880

How do I use quick sort?

846

Can list contain null values?

860

There are 2 int type array data type. One is containing 50 elements, and another one is containing 30 elements. Can we assign the array of 50 elements to an array of 30 elements?

1263

What are red-black trees?

995

What is the use of sorting?

950

Which is faster hashmap or linkedhashmap?

902

Where is insertion sort used?

904

Discuss how to implement queue using stack.

968

Define forest?

972

What is the best case complexity of quicksort?

898

How to fill element (initialize at once) in an array?

1010

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