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 is the need of data structure

11 32153

what is hashing

Infosys, Nirma,

7 16102

what is mean by d-queue?

11 25465

example of linear and non-linear data structures?

Aricent, Infosys,

9 70270

ple.. briefly describe the purpose of having a base case and a recursive case in a recursive algorithm

2 6543

what is a complexity of linear search,binery search?

ABB, Google,

10 40957

what is AVL tree?

ADS, TCS,

5 17277

Tell me real world example of polymorphism and encapsulation .

CybAge, Winit,

10 42122

difference between the run time polymorphism and compile time poly morphism and about virtual function.

CybAge, Innowe, TCS, Wipro,

2 13519

Why enum can not be used directly with printf function?

3 8246

what is R-B tree

Wipro,

4 11297

what is the different between B-tree and B+ tree.

Syntel,

8 44789

how to search an element in sorted linked list with time complexity is O(log n).

Wipro,

3 14002

how to find the number of possible tree in the given tree.

Persistent, TCS, Wipro,

12 28356

why do tree always takes o(log n) time?

TCS,

2 8248

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Un-Answered Questions { Data Structures }

What is default size of hashmap?

951

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

997

Can arraylist be resized?

1059

Why insertion is faster in linked list?

869

What is the purpose of tochararray ()?

1059

Is heap sort faster than quicksort?

873

Give a good data structure for having n queues ( n not fixed) in a finite memory segment. You can have some data-structure separate for each queue. Try to use at least 90% of the memory space.

1001

Is queue fifo or lifo?

931

What are the types of data structures?

1202

Is arraylist a list?

941

What is the prerequisite for binary searching?

1095

Why sorting algorithms are important?

1006

How do you rotate an AVL tree?

1017

What is an example of an array?

1120

How does the size of arraylist increases dynamically?

973

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