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

Data Structures Interview Questions

Questions Answers Views Company eMail

What does the dummy header in the linked list contain?

1202

How many pointers are necessary to implement a simple linked list?

1172

How can you insert a node at the end of linked list?

924

Differentiate between singly and doubly linked lists?

1042

What is the difference between the hash table and hash map?

1073

How does hashset work internally in java?

1053

For addition and deletion. Which one is most preferred: array list or linked list?

934

Is it possible to make an array volatile in java?

979

For searches. Which one is most preferred: array list or linked list?

975

What is a spanning tree?does the minimum spanning tree of a graph give the shortest distance between any 2 specified nodes?

954

Which is the simplest file structure?

1056

Differentiate between queue and deque.

1002

Differentiate between hashset and hashmap.

1041

Differentiate between iterator and enumeration.

972

Differentiate between hashset and treeset.

1061

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Un-Answered Questions { Data Structures }

Explain the term recursive case?

1033

Can we define the size of arraylist?

975

What is mean by sorting?

939

Does concurrenthashmap allow null?

986

What are examples of data structures?

983

Can we change load factor of hashmap?

937

Explain pre-order and in-order tree traversal.

992

Differentiate linear from a nonlinear data structure?

1116

What is bubble sort in data structure?

958

Name two algorithms two find minimum spanning tree?

982

There are 2 int type array data type. One is containing 50 elements, and another one is containing 30 elements. Can we assign the array of 50 elements to an array of 30 elements?

1325

Why is hashmap faster than treemap?

957

What is the need for path compression?

1143

What does bubble sort do?

865

Is duplicate allowed in hashmap?

1124

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