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?

1052

What is the Difference between treemap and hashmap?

1043

Name few collections map implementations?

946

Name few concurrent collection classes?

961

What is the difference between hashset and hashmap?

1100

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

972

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

1038

What is difference between array and arraylist?

1055

What’s the difference between enumeration and iterator interfaces?

982

What is the difference between hashset and treeset?

1045

When will you use array over arraylist?

1006

What is java priority queue?

1024

List the differences between comparable and comparator interface?

970

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

951

What is difference between arraylist and linkedlist?

1087

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Un-Answered Questions { Data Structures }

If you are using c language to implement the heterogeneous linked list, what pointer type should be used?

1109

What are the advantages of selecetion sort?

1158

List some applications of queue data structure.

974

What is data structure geeksforgeeks?

1389

Can map contain duplicate keys?

897

Which data structures are applied when dealing with a recursive function?

1201

Why is concurrenthashmap thread safe?

983

Why do we need sorting algorithms?

974

Does map extend iterable?

1004

What is the idea behind splaying?

1836

Does linked list allow duplicates?

942

What are hashmaps good for?

937

Which is faster hashset or treeset?

1063

What is indexing an array?

1167

How will you free the memory that is allocated at run time?

1023

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