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Although disallowing duplicate search keys in the ADT dictionary is reasonable for some applications, it is...

Although disallowing duplicate search keys in the ADT dictionary is reasonable for some
applications, it is just as reasonable to have an application that will allow duplicates. What are the
implications of adding entries that are not identical but have the same search key? Specifically,
what would the implementations of add, remove, and getValue do?

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Answer #1

The major function of Dictionary is to enhance the performance of the search operation, but as we are allowing the duplicate keys thus we have to search more and thus the complexity of search will increase which could be a problem for the dictionary data structure.

Add: In case of add we may get the keys to be added which are already present so the hash value will be same thus the complexity to add the duplicate values will increase.

Remove: In this case too we need to find the duplicate keys for the value or entry which we want to delete which will eventually increase the complexity of the remove.

getValue: This will allow us to access all the elements rather than a single element as there is no unique key for each entry.

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