The Weekly Challenge - 239

Monday, Oct 16, 2023| Tags: Perl, Raku










09. TASK #1: Same String

10. TASK #2: Consistent Strings


Welcome to the Week #239 of The Weekly Challenge.

Thank you, Robbie Hatley for the prompt response and sharing the interview.

Let us all welcome another Perl hacker, Augie De Blieck Jr., to the Team PWC. Thank you for your first contributions in Perl and Elixir. We also received blog posts for [Perl Task #1], [Perl Task #2] and [Elixir Task #1].

Luca Ferrari came up with solutions in Python for the first time.

Lance Wicks also found time to share his Perl solution to the Task #1.

Andrew Grangaard came back after the break and shared solutions in Perl and Python.

Last 5 weeks mainstream contribution stats. Thank you Team PWC for your support and encouragements.

  Week      Perl       Raku       Blog   
   234       52       35       24   
   235       61       34       24   
   236       51       34       29   
   237       48       34       26   
   238       60       37       29   

Last 5 weeks guest contribution stats. Thank you each and every guest contributors for your time and efforts.

  Week      Guests       Contributions       Languages   
   234       12       48       15   
   235       14       78       23   
   236       14       62       20   
   237       14       54       16   
   238       15       79       24   

TOP 10 Guest Languages

Do you see your favourite language in the Top 10? If not then why not contribute regularly and make it to the top.

 1. Python     (1886)
 2. Ruby       (603
 3. Haskell    (596)
 4. Lua        (528)
 5. C          (445)
 6. Rust       (445)
 7. C++        (415)
 8. BQN        (309)
 9. Go         (283)
10. JavaScript (274)

Blogs with Creative Title

1. Persistently Running by Arne Sommer.

2. Running and Persistence by Bob Lied.

3. You Can’t Touch This! by Dave Jacoby.

4. running sums and multiplications by Luca Ferrari.

5. Reduced Arrays, Reduced Numbers, Reduced Code by Matthias Muth.

6. Be Runnin’ Up That Sum, Be Persisten’ Up That Sort by Packy Anderson.

7. Running persistence by Peter Campbell Smith.

8. Running Persistence by Roger Bell_West.

9. Counting and sorting by Simon Green.

GitHub Repository Stats

1. Commits: 34,651 (+112)

2. Pull Requests: 8,860 (+40)

3. Contributors: 234 (+1)

4. Fork: 295 (+2)

5. Stars: 164

Our solo sponsor Pete Sergeant has been a great support to keep us motivated. We are lucky that he agreed to continue the journey with us in the year 2023. I would like to personally thank Pete and his entire team for their generosity. It would be great if we could add few more to sponsor the prize money so that we could go back and declare weekly champions as we have done in the past. I hope and wish this will become possible in 2023. The amount doesn’t have to be huge. However, it would be nice to show off bunch of supporters. If an organisation comes forward and supports us then that would be the ultimate achievement.


Quick recap of The Weekly Challenge - 238 by Mohammad S Anwar.


If you missed any past reviews then please check out the collection.


If you missed any past reviews then please check out the collection.


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.


Augie De Blieck Jr., an experienced Perl hacker from NJ joined the Team PWC.

Please find out How to contribute?, if you have any doubts.

Please try the excellent tool EZPWC created by respected member Saif Ahmed of Team PWC.


Please check out the guest contributions for the Week #238.

Please find past solutions by respected guests. Please share your creative solutions in other languages.

Task 1: Same String

Submitted by: Mohammad S Anwar

You are given two arrays of strings.

Write a script to find out if the word created by concatenating the array elements is the same.

Example 1

Input: @arr1 = ("ab", "c")
       @arr2 = ("a", "bc")
Output: true

Using @arr1, word1 => "ab" . "c" => "abc"
Using @arr2, word2 => "a" . "bc" => "abc"

Example 2

Input: @arr1 = ("ab", "c")
       @arr2 = ("ac", "b")
Output: false

Using @arr1, word1 => "ab" . "c" => "abc"
Using @arr2, word2 => "ac" . "b" => "acb"

Example 3

Input: @arr1 = ("ab", "cd", "e")
       @arr2 = ("abcde")
Output: true

Using @arr1, word1 => "ab" . "cd" . "e" => "abcde"
Using @arr2, word2 => "abcde"

Task 2: Consistent Strings

Submitted by: Mohammad S Anwar

You are given an array of strings and allowed string having distinct characters.

A string is consistent if all characters in the string appear in the string allowed.

Write a script to return the number of consistent strings in the given array.

Example 1

Input: @str = ("ad", "bd", "aaab", "baa", "badab")
       $allowed = "ab"
Output: 2

Strings "aaab" and "baa" are consistent since they only contain characters 'a' and 'b'.

Example 2

Input: @str = ("a", "b", "c", "ab", "ac", "bc", "abc")
       $allowed = "abc"
Output: 7

Example 3

Input: @str = ("cc", "acd", "b", "ba", "bac", "bad", "ac", "d")
       $allowed = "cad"
Output: 4

Strings "cc", "acd", "ac", and "d" are consistent.

Last date to submit the solution 23:59 (UK Time) Sunday 22nd October 2023.


If you have any suggestions or ideas then please do share with us.

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