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?

1161

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

1119

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

874

Differentiate between singly and doubly linked lists?

980

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

1005

How does hashset work internally in java?

1004

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

887

Is it possible to make an array volatile in java?

915

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

937

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

898

Which is the simplest file structure?

1002

Differentiate between queue and deque.

952

Differentiate between hashset and hashmap.

987

Differentiate between iterator and enumeration.

917

Differentiate between hashset and treeset.

1003

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Un-Answered Questions { Data Structures }

What is data structure and its classification?

915

How to use appendNode() in linkedlist()?

1089

Define a linear and non linear data structure.

1000

What is the default size of an arraylist?

936

What is the best case for bubble sort?

862

Now you are given an array of a characters (both ASCII and Kanji) and, an index into the array. The index points to the start of some character. Now you need to write a function to do a backspace (i.e. delete the character before the given index).

929

Describe stack operation.

970

Is array part of collection framework?

900

Parenthesis is never required in postfix or prefix expressions, why?

901

What is the difference between an array and vector?

1047

What is data in computer science?

936

What is difference between arraylist and linkedlist?

1037

How do you declare A pointer to array of three chars

1055

What is type structure?

869

What is a data structure? What are the types of data structures?

1041

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