The Weekly Challenge

09. TASK #1: Valid Phone Numbers

HEADLINES

Welcome to the Week #110. It appears to be a really long journey. It is only possible because of all your supports and encouragements. There are couple of things that made this week very special. First, we crossed the magic numbers one more time. Last time we reached the magic numbers was in the Week #100. We did come closer to the target in the Week #106 and Week #108 with numbers 97 and 92 respectively. So well done Team PWC. Please keep the momentum going.

Last week, I missed very important news about the Guest Contributions. We broke previous of record of 68 contributions by guest in the Week #104. We received 69 contributions in the Week #108. Glad, I didn’t say anything about the number 69, as this Week #109 we went past even that figure. We now have all time record of 81 contributions by guests. It is not just numbers but the varieties. Abigail and Laurent Rosenfeld are two main contributors that helped reach the target. At one point last week, we had more guest contributions than the regular contributions of Perl and Raku. I hope and wish to see the guest contributions go past the magic numbers of 100.

Welcome back Bartosz Jarzyna and thanks for the contributions. I noticed you shared Raku solutions for the first time. Well done.

I would also like to welcome Maxim Kolodyazhny after a short break and contributing in Raku for the first time. Before this he only shared Perl solutions with us.

Thank you, Cheok-Yin Fung for the blog after a long break. It is always pleasure to read your blog.

I would also like to thank, Lance Wicks for the contributions: Perl and Blog. We missed you in the Week #108.

Last but not the least, welcome back Richard Park for sharing solutions in APL.

Lance Wicks: Chowla Numbers

Mohammad Anwar: Chowla Numbers

Let us share some interesting stats from the GitHub repository.

1. Commits: 16,149 (+163)

2. Pull Requests: 3,954 (+40)

3. Contributors: 163

4. Fork: 204

5. Stars: 92 (+1)

Last but not least, I would like to thank each and every member for their support and encouragement.

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 2021. 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 2021. 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.

RECAP

Quick recap of “The Weekly Challenge - 109” by Mohammad S Anwar.

PERL REVIEW

Please check out Perl solutions review of the “Perl Weekly Challenge - 107” by Colin Crain.

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

RAKU REVIEW

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

CHART

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.

NEW MEMBERS

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.

GUESTS

Please checkout the guest contributions for the Week #109.

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

TASK #1 › Valid Phone Numbers

Submitted by: Mohammad S Anwar

You are given a text file.

Write a script to display all valid phone numbers in the given text file.

Acceptable Phone Number Formats

+nn  nnnnnnnnnn
(nn) nnnnnnnnnn
nnnn nnnnnnnnnn

Input File

0044 1148820341
 +44 1148820341
  44-11-4882-0341
(44) 1148820341
  00 1148820341

Output

0044 1148820341
 +44 1148820341
(44) 1148820341

TASK #2 › Transpose File

Submitted by: Mohammad S Anwar

You are given a text file.

Write a script to transpose the contents of the given file.

Input File

name,age,sex
Mohammad,45,m
Joe,20,m
Julie,35,f
Cristina,10,f

Output:

name,Mohammad,Joe,Julie,Cristina
age,45,20,35,10
sex,m,m,f,f

Last date to submit the solution 23:59 (UK Time) Sunday 2nd May 2021.