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

Data Structures Interview Questions

Questions Answers Views Company eMail

Is arraylist better than array?

697

Does hashmap allow duplicate keys?

768

Can you change size of array once created?

669

Can an arraylist be null?

680

Can hashset contain duplicates?

704

What is difference between treeset hashset linkedhashset?

647

What is an array vs list?

684

What is difference between while and do while?

696

Why use a tuple instead of a list?

675

Is list an array?

630

What is the difference between for and foreach loop?

694

Is list same as array?

644

What is a string or array type?

641

What is difference between for loop and foreach?

692

What is the difference between list and arraylist?

701

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Un-Answered Questions { Data Structures }

Explain binary representation?

680

Differentiate between set and map.

804

what is Singly Linked list?

797

Difference between abstract data type, data type and data structure?

830

Is quicksort faster than merge sort?

710

What is the use of placement new?

816

how to display Singly Linked List from First to Last?

667

What is a data structure? What are the types of data structures? Briefly explain them

760

Explain how to find 3rd element from end in a linked list in one pass?

690

what are the applications of Linked Lists?

760

What's difference between stack and queue?

745

Write a program to insert an element and in the specific position in the array?

735

Which is better arraylist or linkedlist?

680

How do we find duplicate elements in an array?

762

What is application of data structure?

698

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