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HEADLINES

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With great pleasure, we announce Mark Senn as the winner of “Perl Weekly Challenge - 031”. Congratulations Mark, you should soon hear from Perl Careers about your reward. For rest of the participants, I would say Good Luck for next time. Keep sending in your solutions and share your knowledge with each other.

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RECAP

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Here is the recap of last week “Perl Weekly Challenge - 031”.

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PERL REVIEW

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Please checkout Perl solutions review of the “Perl Weekly Challenge - 030” by Kian-Meng Ang.

If you missed any past reviews then please checkout the collection.

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RAKU REVIEW

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Please checkout Raku solutions review of the “Perl Weekly Challenge - 030” by Laurent Rosenfeld.

Laurent also reviewed Raku solutions of “Perl Weekly Challenge - 003” and “Perl Weekly Challenge - 014”.

If you missed any past reviews then please checkout the collection.

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CHART

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Please take a look at the charts showing interesting data.

I would like to thank every member of the team for their valuable suggestions. Please do share your experience with us.

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NEW MEMBERS

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1. Tyle Limkemann, an experienced hacker from Arizona, USA.

2. Javier Luque from Sevenoaks with 16 years of experience.

Check out current team members.

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GUESTS

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1. Adam Russell shared C++ solutions for “Perl Weekly Challenge - 031”.

2. Lubos Kolouch shared Python solution for “Perl Weekly Challenge - 031”.

Please do share your creative solutions in other languages.

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Task #1

Contributed by Neil Bowers

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Count instances

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Create a script that either reads standard input or one or more files specified on the command-line. Count the number of times and then print a summary, sorted by the count of each entry.

So with the following input in file example.txt

apple
banana
apple
cherry
cherry
apple

the script would display something like:

apple     3
cherry    2
banana    1

For extra credit, add a -csv option to your script, which would generate:

apple,3
cherry,2
banana,1

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Task #2

Contributed by Neil Bowers

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ASCII bar chart

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Write a function that takes a hashref where the keys are labels and the values are integer or floating point values. Generate a bar graph of the data and display it to stdout.

The input could be something like:

$data = { apple => 3, cherry => 2, banana => 1 };
generate_bar_graph($data);

And would then generate something like this:

 apple | ############
cherry | ########
banana | ####

If you fancy then please try this as well: (a) the function could let you specify whether the chart should be ordered by (1) the labels, or (2) the values.

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Last date to submit the solution 23:59 (UK Time) Sunday 3rd November 2019.

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