Is array faster than arraylist?


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What is linear and non linear structure?

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Can treemap key null?

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Convert the following infix expression to post fix notation ((a+2)*(b+4)) -1

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Why entry interface is used in map?

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How arraylist increase its size?

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What are the pre-requisite for the collection to perform binary search?

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What is the logic to reverse the array?

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What is B+ tree?

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List the data structures which are used in rdbms, network data modal, and hierarchical data model.

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What is the time complexity of arrays sort?

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What is hashing technique?

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Explain what is a spanning tree?

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