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?

1108

Can we use ordered set for performing binary search?

915

What is rule regarding overriding equals and hascode method?

908

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

1104

What is the difference between arraylist and linkedlist?

985

Which interface treemap implements?

974

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

869

Which interfaces are implemented by linkedhashset?

1034

What is copyonwritearraylist?

1001

Why is reflection slower?

897

Which is the parent class of hashmap class?

1148

Which interfaces are implemented by enumset?

884

What is the difference between collection and collections?

1023

What is the difference between collections class vs collections interface?

961

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

932

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Un-Answered Questions { Data Structures }

State the rules to be followed during infix to postfix conversions?

1159

Write a Program for Reverse a linked list.

953

Define root?

983

What sorting algorithm does arrays sort use?

826

What are the types of algorithms?

978

How long does it take to master data structures and algorithms?

1132

How does a selection sort work for an array?

926

Which language is best to learn data structures?

997

What are the advantage of collection classes over arrays?

894

How does a hashtable work?

884

Is complete binary tree?

892

How do you initialize an arraylist?

974

What is impact of signed numbers on the memory using data structures?

1036

In what data structures are pointers applied?

976

What are the operations that can be performed on a stack?

913

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