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 is a static structure?

942

Does treemap allow null keys?

928

Can arraylist hold different types?

999

What are the disadvantages of linked list?

899

Is a hashmap a dictionary?

869

What is advantage and disadvantage of linked list?

860

What are the disadvantages of linked list over array?

901

Does linked list allow null values?

808

What is difference between arraylist and list?

912

Is collection a class or interface?

895

Can sets contain duplicates?

824

What can be stored in an arraylist?

945

What are the benefits of using arrays?

1039

What happens when arraylist is full?

981

Does treeset remove duplicates?

921

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Un-Answered Questions { Data Structures }

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?

1263

What is huffman’s algorithm?

1085

Define in brief an array. What are the types of array operations?

1191

Define Data Structures?

964

Is stack a dynamic data structure?

888

Are linked lists useful?

895

Find duplicates in infinite range. Which data structure to be used to give efficient solution?

952

Does arraylist guarantee insertion order?

901

Define data type and what are the types of data type?

885

What are the four characteristics of algorithms?

870

What is the meaning of anonymous array? Explain with an example?

1192

Explain the uses of b+ tree.

918

Which sorting method is slowest?

956

Define the term “percolate down”?

991

Why is reflection slower?

895

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