Map Has Duplicate Values
Write a method
hasDuplicateValues that, given a
Map<String, String>, returns
true if the map contains
duplicate values—meaning that two different keys map to the same value—and
Recall that a map can never contain duplicate keys, since the second mapping from the same key overwrites the
You should use a
Set to solve this problem!
And as usual, maps, sets, and lists are all built-in to Kotlin and available for you to use to solve this problem.