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Data structures Interview Questions

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Data structures Interview Questions

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Does Hash Table allow null values

1 Answer

Implement a sparse matrix Java class with a constructor, set and get method. The matrix has millions of rows and columns and is at a maximum 15% populated.

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HashMap implementation

1 Answer

if there is a stream of numbers( billions of them) as input from some source what data structure and algorithm to be used for saving the 100 largest numbers?

1 Answer

Create an application/program that lists all words in the English language that can be created using a set of random characters. Characters cannot be reused, words must use all characters in the set.

1 Answer

level by level print BST

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What are the differences between a linked list and an array? What are the pros and cons? What kind of situations would you use each in? Can a stack be a queue? Can a queue be a stack?

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Describe a data model to use as the back-end for a simple text editor.

1 Answer

What data warehousing experience do you have?

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most of them where data structure and OS questions

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