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Category > Programming Posted 03 May 2017 My Price 7.00

Write a method called reverse that accepts a map

Write a method called reverse that accepts a map from strings to strings as a parameter and returns a new map that is the reverse of the original. The reverse of a map is a new map that uses the values from the original as its keys and the keys from the original as its values. Since a map’s values need not be unique but its keys must be, you should have each value map to a set of keys. In other words, if the original map maps keys of type K to values of type V, the new map should map keys of type V to values that are Sets containing elements of type K. For example, the map {42=Marty, 81=Sue, 17=Ed, 31=Dave, 56=Ed, 3=Marty, 29=Ed} has a reverse of {Marty=[42, 3], Sue=[81], Ed=[17, 56, 29], Dave=[31]}. (The order of the keys and values does not matter.)

 

 

 

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Alpha Geek
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Status NEW Posted 03 May 2017 02:05 PM My Price 7.00

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file 1493823223-answer1.docx preview (228 words )
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