Robbie Hatley’s Solutions, in Perl, for The Weekly Challenge #385 (“Uncommon Words” and “Outermost Parentheses”)

For those not familiar with "The Weekly Challenge", it is a weekly programming puzzle with two parts, with a new pair of tasks each Monday. You can find it here: The Weekly Challenge

The Weekly Challenge for the week of 2026-08-03 through 2026-08-09 is #385.

The tasks for challenge #385 are as follows:

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Task 385-1: Uncommon Words
Submitted by: Mohammad Sajid Anwar
You are given two sentences. Write a script to return a list of
all uncommon words. Order is not important.

Judging by the answers given to the examples, I see that the word "uncommon" is being used to mean "used once only", not "not in-common between sentences". So I use a hash to keep track of total occurrences of words, and I return only those words which occur exactly once.

Robbie Hatley's Perl Solution to The Weekly Challenge 385-1

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Task 385-2: Outermost Parentheses
Submitted by: Mohammad Sajid Anwar
You are given a valid parentheses string. Write a script to
return the string after removing the outermost parentheses of
every primitive string in the primitive decomposition of the
given string.

This is just a matter of keeping track of parenthetical depth in an integer variable.

Robbie Hatley's Perl Solution to The Weekly Challenge 385-2

That's it for challenge 385; see you on challenge 386!