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What is comparator interface used for?


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More Data Structures Interview Questions

What is the prerequisite for binary searching?

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Is it necessary to sort a file before searching a particular item ?

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How null key is handled in hashmap?

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Give a good data structure for having n queues ( n not fixed) in a finite memory segment. You can have some data-structure separate for each queue. Try to use at least 90% of the memory space.

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What are the standard ways in which a graph can be traversed?

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