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

Data Structures Interview Questions

Questions Answers Views Company eMail

Can we null keys in treemap?

1001

What is the Difference between treemap and hashmap?

991

Name few collections map implementations?

891

Name few concurrent collection classes?

905

What is the difference between hashset and hashmap?

1050

What do you know about the big-o notation and can you give some examples with respect to different data structures?

929

What is difference between array and arraylist? When will you use array over arraylist?

978

What is difference between array and arraylist?

989

What’s the difference between enumeration and iterator interfaces?

922

What is the difference between hashset and treeset?

995

When will you use array over arraylist?

961

What is java priority queue?

970

List the differences between comparable and comparator interface?

929

What are some of the best practices relating to the java collection framework?

907

What is difference between arraylist and linkedlist?

1037

Post New Data Structures Questions

Un-Answered Questions { Data Structures }

What is difference between data type and variable?

804

Which is best array or linked list?

904

What is modcount in hashmap?

886

What is a matrix?

1075

Can list contain null values?

873

Is an arraylist a vector?

965

What do you mean by external sorting?

858

Tell me about circular linked list?

933

Discuss how to implement queue using stack.

986

Explain what is the type of the algorithm used in solving the 8 queens problem?

873

Define an equivalence relation?

1084

Why is hashmap faster than treemap?

910

Why do we use collections?

890

Is map a data structure?

920

Why do we use arrays?

906

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