How many null values are allowed in hashmap?


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More Data Structures Interview Questions

How do you sort elements in an arraylist?

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What is heap tree?

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What is the time complexity of hashmap get () and put () method?

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How is bubble sort done?

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What is the difference between one and two dimensional?

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Can we store primitives in collections?

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Can you provide some implementation of a dictionary having large number of words?

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What is the difference between file structure and storage structure?

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Tell me real world example of polymorphism and encapsulation .

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Which algorithm is used in collections sort method?

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Why sorting algorithms are important?

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What are the advantages of merge sort?

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