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 Insertion sort, selection sort, bubble sort( basic differences among the functionality of the three sorts and not the exact algorithms)?

TCS,

975

Write an algorithm to check if there is a loop in a doubly linked list.

DELL,

942

Write an algorithm to find middle element in the linked list.

JPMorgan Chase,

909

Write is a binary search tree? Write an algorithm and tell complexity?

ITC Indian Tobacco Company,

895

How will you sort the elements of array in descending order?

Wipro,

943

How would you sort words in a large file?

DELL,

896

Write a program for Sorting an Array. Which sorting will you prefer?

962

Can you distinguish between ArrayList and Array?

QuestPond,

1071

Program to remove duplicate elements in an array.

InterGraph,

1018

Explain the Stack

Tech Mahindra,

958

How would you implement two stacks using a single array?

TCS,

978

What happens if an array goes out-of-bounds?

TCS,

1079

Write a code for dynamic allocation of array.

iNautix,

1038

If you have to store one lakh objects, what will be a better option- a hash map or an array list?

DELL,

1200

Is Arraylist faster than Array? Why?

QuestPond,

1009

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Un-Answered Questions { Data Structures }

How many types of search algorithms are there?

877

How to search binary in a sorted array?

838

What are the advantage of collection classes over arrays?

888

Define collision in hashing?

909

What is difference between hashset and linkedhashset?

1088

What is mean by abstract data type?

979

What do you mean by selection sort?

877

How do you find the time complexity of a bubble sort?

838

Why do we study data structures?

921

Can you have an arraylist of arrays?

939

How would you sort words in a large file?

896

What are the types of bulleted list?

833

Mention the advantages of representing stacks using linked lists than arrays?

912

What are different types of linked lists?

925

What are the five examples of data?

960

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