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,

991

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

DELL,

950

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

JPMorgan Chase,

915

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

ITC Indian Tobacco Company,

904

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

Wipro,

955

How would you sort words in a large file?

DELL,

904

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

966

Can you distinguish between ArrayList and Array?

QuestPond,

1077

Program to remove duplicate elements in an array.

InterGraph,

1020

Explain the Stack

Tech Mahindra,

973

How would you implement two stacks using a single array?

TCS,

990

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

TCS,

1085

Write a code for dynamic allocation of array.

iNautix,

1049

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

DELL,

1206

Is Arraylist faster than Array? Why?

QuestPond,

1019

Post New Data Structures Questions

Un-Answered Questions { Data Structures }

How do you do a heap sort?

873

Why quicksort is better than merge sort?

915

What happens if we put duplicate key in hashmap?

861

Do you know what is linear search?

895

Is quicksort greedy algorithm?

1047

What is dynamic array in excel?

888

What is array and string?

965

What is a treemap used for?

887

What do you mean by union-by-weight?

998

What is stable sorting?

869

Write a program to sum values of given array.

1029

Which is more efficient merge sort vs quicksort?

852

What is meant by ordered and sorted in collections?

900

What is bubble sort?

902

Define hash table?

975

For More Un-Answered { Data Structures } Questions Click Here