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

Data Structures Interview Questions

Questions Answers Views Company eMail

If you are given a choice to use either arraylist and linkedlist, which one would you use and why?

982

Which is the parent class of deque class?

921

Can we add heterogeneous elements into treemap?

952

Treemap orders the elements on which field?

905

Will it create any problem if we add elements with key as user defined object into the treemap?

905

Which is the parent class of linkedhashset class?

902

Will this code give error if I try to add two heterogeneous elements in the arraylist? And why?

946

Can we override compareto method for enumerations?

993

If I try to add enum constants to a treeset, what sorting order will it use?

1145

What is the difference between list, set and map?

974

Which is the parent class of linkedlist class?

1005

Can we add duplicate keys in a hashmap? What will happen if we attempt to add duplicate values?

827

Which are the sorted collections?

944

Why using cookie to store session info is a better idea than just using session info in the request?

930

What are the Differences between map and hashmap?

998

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Un-Answered Questions { Data Structures }

What is data and information explain with example?

953

Which sorting algorithm is considered the fastest?

1003

What member function places a new node at the end of the linked list?

1053

What is harvesting in agriculture?

857

What is tree and its properties?

883

Is array a collection?

895

Why do we use linked lists?

897

Does treemap allow null values?

850

What are the categories of avl rotations?

983

Explain binary searching, Fibonacci search.

942

Can arraylist be null?

904

What are the advantages of linked list?

811

Reverse a linked list from the middle.

928

How does a heap sort work?

891

Define terminal nodes in a tree?

1028

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