Given a String
containing words separated by the " " (space) character, write a method hasDuplicateWords
that
returns true
if any word appears twice in the String
.
Also, you should ignore case: so "Chuchu" and "chuchu" are considered the same word.
require
that the passed String
is not null
.
So, for example, given the String
"Wow that is amazing", you would return false
,
but given the String
"Chuchu chuchu xyz" you would return true
.
Our intention is for you to solve this problem using a Set
, but there are also solutions that use a Map
.
You should not use a nested loop to solve this problem.
You may want to use the lowercase
method of Kotlin String
s.
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