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Define Data Structures?


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More Data Structures Interview Questions

How does variable declaration affect memory allocation?

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Which interface provides the capability to store objects using a key-value pair?

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Does hashset guarantee order?

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What’s the difference between enumeration and iterator interfaces?

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What is the best data structure and algorithm to implement cache?

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Does treeset allow null values?

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Which data structure is needed to convert infix notations to post fix notations?

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I am given a sequential algorithm that does a routine search on an unordered list. N = 20. The probability that the value x does NOT appear in the list is exactly 60%, and the probability that x DOES appear is 40%. The 3 questions that I could not get were: A) What is the avg number of element comparisons performed when n = 20 and x does NOT appear in the List. (my answer was 20, is this correct?) B) What is the avg number of element comparisons peformed when n = 20 and x DOES appear in the list? C) What is the avg number of element comparisons performed when n = 20. This should be a single number answer they said.

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Which is the fastest sorting?

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How do you represent a linked list?

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What does isempty() member method determines?

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What are different sorting algorithms?

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