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)

1416

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.

1301

What is Jagged Arrays?

967

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

935

where do you use double linked list?

1063

Explain binary searching and Fibinocci search?

957

Write program for Quick sort ?

1101

What is the difference between Array and LinkedList?

1011

write a program to accept name & sort them?

910

Write program for Bubble Sort ?

989

What is the difference between Array and Arraylist?

1081

Differentiate between compilers and interpreters.

Tech Mahindra,

927

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

Tech Mahindra,

1022

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Un-Answered Questions { Data Structures }

Define threaded binary tree.

1026

What is structured data with example?

862

Is array of data structure?

838

What is data structure operations?

1024

Parenthesis is never required in postfix or prefix expressions, why?

901

What do you mean by data and data structure?

968

Can a hashmap have duplicate keys?

927

Does treeset allow null?

845

Who invented data structure?

1079

What is the use of threaded binary tree?

991

What is array and structure?

986

Is it possible to store null key and null values in a hashmap?

846

State the different types of linked lists?

945

What do you mean by double hashing?

1052

Draw the B-tree of order 3 created by inserting the following data arriving in sequence – 92 24 6 7 11 8 22 4 5 16 19 20 78

1620

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