Can arraylist store objects?

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What is bubble sort in data structure?

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If I try to add enum constants to a treeset, what sorting order will it use?

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Can you have an arraylist of arrays?

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Minimum number of queues needed to implement the priority queue?

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Of the following tree structure, which is, efficient considering space and time complexities? (a) Incomplete Binary Tree (b) Complete Binary Tree (c) Full Binary Tree (b) Complete Binary Tree.

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Is hashmap get thread safe?

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Is bucket sort a comparison sort?

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Does the minimal spanning tree of a graph give the shortest distance between any 2 specified nodes?

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What is example of data?

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Describe the level term in a tree.

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Is array part of collection framework?

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