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

Data Structures Interview Questions

Questions Answers Views Company eMail

Which is the simplest file structure? (a) Sequential (b) Indexed (c) Random (a) Sequential

1122

Whether Linked List is linear or Non-linear data structure?

1 1363

Draw a binary Tree for the expression : A * B - (C + D) * (P / Q)

1417

For the following COBOL code, draw the Binary tree? 01 STUDENT_REC. 02 NAME. 03 FIRST_NAME PIC X(10). 03 LAST_NAME PIC X(10). 02 YEAR_OF_STUDY. 03 FIRST_SEM PIC XX. 03 SECOND_SEM PIC XX.

1302

What is Jagged Arrays?

967

Construct a doubly linked list using a single pointer in each node?

936

where do you use double linked list?

1063

Explain binary searching and Fibinocci search?

957

Write program for Quick sort ?

1105

What is the difference between Array and LinkedList?

1012

write a program to accept name & sort them?

912

Write program for Bubble Sort ?

992

What is the difference between Array and Arraylist?

1081

Differentiate between compilers and interpreters.

Tech Mahindra,

928

How many links are there in a binary tree of N nodes?

Tech Mahindra,

1022

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Un-Answered Questions { Data Structures }

What is 1d array?

966

Can arraylist be resized?

999

Why do we need to use computers to help us sort lists?

930

Define non-linear data structures?

1033

What is mean by selection sort?

890

What is garbage collection in data structure?

945

Devise a program to sort an array using bubble sort.

1042

If you do not initialize an array what will happen?

1020

which is the simplest file structure? (Sequential, indexed, random)

1269

Why is merge sort faster?

883

Is arraylist better than array?

946

What is the best case complexity of quicksort?

905

Is hashmap get thread safe?

864

Is a list an array?

838

Why sorting is used?

935

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