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 interface provides the capability to store objects using a key-value pair?

1162

Can we use ordered set for performing binary search?

960

What is rule regarding overriding equals and hascode method?

961

Can you provide some implementation of a dictionary having large number of words?

1155

What is the difference between arraylist and linkedlist?

1047

Which interface treemap implements?

1014

If we try to add duplicate key to the hashmap, what will happen?

911

Which interfaces are implemented by linkedhashset?

1087

What is copyonwritearraylist?

1045

Why is reflection slower?

953

Which is the parent class of hashmap class?

1217

Which interfaces are implemented by enumset?

937

What is the difference between collection and collections?

1076

What is the difference between collections class vs collections interface?

1030

What things you would care about to improve the performance of application if its identified that its db communication that needs to be improved?

985

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Un-Answered Questions { Data Structures }

Define a priority queue?

1191

What sorting algorithm does arrays sort use?

883

Why is quicksort so fast?

944

Write a code for dynamic allocation of array.

1114

Is it possible to increase size of array?

999

What is space complexity of a program?

933

How do treesets work internally?

996

What do you mean by tree edge?

1007

What are the types of data structures?

1202

Explain how is linked list implemented?

1002

Is hashset thread safe?

1056

Write a data structure for a queue.

1290

What is garbage collection in data structure?

996

What are doubly linked lists?

1058

What is the best sorting technique?

983

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