The Weekly Challenge - 283-1

Read my experience with ChatGPT: Read

ChatGPT might get mixed reviews, but for me, it's more than just a digital toy. 
When I tackled Mohammad's Week 283 Task #1, my brain immediately jumped to using hashes and counting occurrences. 
I ended up solving it with the Statistics::Frequency module—simple, effective, and one less thing to overthink.

But later that evening, curiosity got the better of me, and I wondered, "What would ChatGPT do?" So, I asked. 
It whipped out the classic hash method, and the code was impressively clear. But, naturally, I couldn't resist 
playing the role of a lifelong Perl newbie (a title I'm sure I'll hold onto forever). I asked ChatGPT to annotate 
the code in a way even my cat could understand. Then I threw in a few curveballs—requesting input validation 
and an evaluation of the output. The result? Pretty darn good. ChatGPT turned out to be a decent teacher, 
despite having the patience of a slightly frazzled TA during finals week. 

Now, don't get me wrong—ChatGPT and I have had our share of hilarious misadventures. I've driven it to the 
brink of a digital breakdown by pointing out its recurring, silly logical errors. It's like a stubborn 
student who occasionally needs a gentle nudge (or a firm push) in the right direction 😄. But all in all, 
it's been a surprisingly helpful companion in my coding journey, with just the right mix of logic and laughs.

And the adventure doesn't stop there. I'm now experimenting with tweak settings like temperature and top_p. 
This opens up a whole new world of possibilities for making the AI responses as creative or conservative 
as I need them to be. Who knew AI could be so much fun to play with—both as a tool and a toy?

If you want to see the whole saga, the solution by ChatGPT- is posted here 
(and I'm curious if colleagues posted similar solutions!)

#!/usr/bin/perl
use strict;
use warnings;

# Define a subroutine to find the unique value in an array
sub find_unique_value {

    # Check if the input is an array reference
    my ($array_ref) = @_;
    if (!defined($array_ref) || ref($array_ref) ne 'ARRAY') {
        die "Error: Input must be an array reference\n";
    }

    # Check if the array is empty
    if (@$array_ref == 0) {
        die "Error: Input array is empty\n";
    }

    # Check if all elements in the array are integers
    foreach my $value (@$array_ref) {
        if (!defined($value) || $value!~ /^\d+$/) {
            die "Error: All elements in the input array must be integers\n";
        }
    }

    # Create an empty hash to store the counts of each value
    my %counts;

    # Iterate over the array and increment the count for each value
    $counts{$_}++ for @$array_ref;

    # Use the "grep" function to find the key with a count of 1
    # The "grep" function returns a list of values that match the condition
    # In this case, we're looking for the key(s) in the %counts hash that have a value of 1

    my $unique_value = (grep { $counts{$_} == 1 } keys %counts)[0];

    # The "[0]" is used to extract the first (and hopefully only) element from the list returned by "grep"
    # This is because we expect there to be only one unique value in the array
    # If there are multiple unique values, this code will only return the first one it finds
    # If there are no unique values, this code will return an undefined value

    # Check if a unique value was found
    if (!defined($unique_value)) {
        die "Error: No unique value found in the input array\n";
    }

    return $unique_value;
}

# Example usage:

my @array = (1, 2, 2, 3, 3, 4, 4, 5, 5, 6);
my $unique_value = find_unique_value(\@array);
print "The unique value is: $unique_value\n"; # Output: 1