Is it possible to store null key and null values in a hashmap?


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More Data Structures Interview Questions

Calculate the address of a random element present in a 2d array, given base address as ba.

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What are the tasks performed while traversing a binary tree?

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Why is hashmap faster?

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What is data structure definition?

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What is 2 dimensional linked list?

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Minimum number of queues needed to implement the priority queue?

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Differentiate between hashmap and treemap.

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What is the difference between arraylist and hashmap?

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Is hashmap part of collection?

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When will you sort an array of pointers to list elements, rather than sorting the elements themselves?

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How do arrays work?

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Can arraylist be null?

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