Robbie Hatley’s Solutions, in Perl, for The Weekly Challenge #386 (“Reverse Base” and “Rational Numbers”)

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 2026-08-10 through 2026-08-16 is #386.

The tasks for challenge #386 are as follows:

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Task 386-1: Reverse Base
Submitted by: Mohammad Sajid Anwar
You are given a string representing a number, and an integer
specifying the base of that representation. Write a function
to convert this string to an integer. (For bases greater than
10, use characters A-Z, a-z, + and / in that order.)

This is basically a repeat of 384, so I'll just re-use that solution, which uses the base conversion routines in Math::BigInt. Though, I'll have to make some minor tweaks to allow for the collation sequence specified in 386.

Robbie Hatley's Perl Solution to The Weekly Challenge 386-1

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Task 386-2: Rational Numbers
Submitted by: Mohammad Sajid Anwar
You are given two strings representing non-negative rational
numbers. Write a script to return true if the two given rational
numbers are same, otherwise false.

Rather than use inexact approximations (which was my first inclination), I chose to build "Math::BigRat" objects for each of the input strings, then simply compare them.

Robbie Hatley's Perl Solution to The Weekly Challenge 386-2

That's it for challenge 386; see you on challenge 387!