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

Data Structures Interview Questions

Questions Answers Views Company eMail

Differentiate between hashmap and treemap.

972

Differentiate between the singly linked list and doubly linked list.

987

Differentiate between set and map.

1177

Differentiate between collection and collections.

1087

Differentiate between iterator and listiterator.

996

Differentiate between iterable and iterator.

1101

Differentiate between failfast and failsafe.

1174

Differentiate between queue and stack.

1213

Differentiate between list and set.

1075

Differentiate between an array and an arraylist.

1071

Differentiate between hashmap and hashtable.

1117

Differentiate between list and map.

1018

Differentiate between comparable and comparator.

1044

Differentiate between arraylist and vector.

1368

Differentiate between priorityqueue and treeset.

1243

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Un-Answered Questions { Data Structures }

Is heap sort stable?

879

Define indegree of a graph?

1078

What is difference between data type and data structure?

822

What is a matrix?

1078

What do you mean by selection sort?

882

Which is the parent class of enumset class?

956

Can you tell me the differences between Array and ArrayList?

1055

What are the Advantages and disadvantages of Array?

1156

What happens in insertion sort?

923

Is queue fifo or lifo?

888

A lot of data structures related programs related to only trees and graphs, like the diameter of a tree, removing the loops in a graph etc.

1036

Mention some drawbacks of the linked list.

974

How does sort function work?

874

What is stable sorting?

874

What is an externalizable interface?

972

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