diff --git a/exercises/parallel-letter-frequency/description.md b/exercises/parallel-letter-frequency/description.md index c48058bdb9..400cc0191c 100644 --- a/exercises/parallel-letter-frequency/description.md +++ b/exercises/parallel-letter-frequency/description.md @@ -6,3 +6,7 @@ Parallelism is about doing things in parallel that can also be done sequentially. A common example is counting the frequency of letters. Create a function that returns the total frequency of each letter in a list of texts and that employs parallelism. + +Uppercase letters count towards their lowercase equivalent. Support +at least the extended Latin character set, so that unicode "ΓΌ" is +counted separately from "u". Punctuation and whitespace are ignored.