The Weekly Challenge

HEADLINES

Welcome to the Week #242 of The Weekly Challenge.

Once again, it is time to declare the next champion as today is the first monday of the month. With great pleasure, I announce Packy Anderson as the next champion of the weekly challenge. He joined the Team PWC in the Week #227. As of today he contributed 30 Perl, 30 Raku, 18 Python, 8 Java and 15 blogs.

As you all know, we run our own Advent Calendar every year. We will continue the tradition this year too. If you want your favourite blog post to be part of this year calendar then please do share the link with us (perlweeklychallenge@yahoo.com).

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


`Week`	`Perl`	`Raku`	`Blog`
`237`	48	34	26
`238`	60	37	29
`239`	59	41	28
`240`	62	36	26
`241`	54	31	24

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


`Week`	`Guests`	`Contributions`	`Languages`
`237`	14	54	16
`238`	15	79	24
`239`	20	84	24
`240`	18	89	26
`241`	14	68	21

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     (1947)
 2. Ruby       (617)
 3. Haskell    (604)
 4. Lua        (542)
 5. Rust       (457)
 6. C          (455)
 7. C++        (431)
 8. BQN        (315)
 9. Go         (293)
10. JavaScript (281)

Blogs with Creative Title

1. Recursive Loops and Code Re-Use by Adam Russell.

2. Arithmetic Prime by Arne Sommer.

3. Math is hard? by Ian Rifkin.

4. loops everywhere! by Luca Ferrari.

5. Triplets Prime by Packy Anderson.

6. Triplets and factors by Peter Campbell Smith.

7. Prime Triplets by Roger Bell_West.

8. Triplets and Sorting by Simon Green.

GitHub Repository Stats

1. Commits: 34,992 (`+110`)

2. Pull Requests: 8,994 (`+42`)

3. Contributors: 237

4. Fork: 300 (`+1`)

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.

RECAP

Quick recap of The Weekly Challenge - 241 by Mohammad S Anwar.

PERL REVIEW

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 check out the guest contributions for the Week #241.

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

Task 1: Missing Members

Submitted by: Mohammad S Anwar

You are given two arrays of integers.

Write a script to find out the missing members in each other arrays.

Example 1

Input: @arr1 = (1, 2, 3)
       @arr2 = (2, 4, 6)
Output: ([1, 3], [4, 6])

(1, 2, 3) has 2 members (1, 3) missing in the array (2, 4, 6).
(2, 4, 6) has 2 members (4, 6) missing in the array (1, 2, 3).

Example 2

Input: @arr1 = (1, 2, 3, 3)
       @arr2 = (1, 1, 2, 2)
Output: ([3])

(1, 2, 3, 3) has 2 members (3, 3) missing in the array (1, 1, 2, 2). Since they are same, keep just one.
(1, 1, 2, 2) has 0 member missing in the array (1, 2, 3, 3).

Task 2: Flip Matrix

Submitted by: Mohammad S Anwar

You are given n x n binary matrix.

Write a script to flip the given matrix as below.

1 1 0
0 1 1
0 0 1

a) Reverse each row

0 1 1
1 1 0
1 0 0

b) Invert each member

1 0 0
0 0 1
0 1 1

Example 1

Input: @matrix = ([1, 1, 0], [1, 0, 1], [0, 0, 0])
Output: ([1, 0, 0], [0, 1, 0], [1, 1, 1])

Example 2

Input: @matrix = ([1, 1, 0, 0], [1, 0, 0, 1], [0, 1, 1, 1], [1, 0, 1, 0])
Output: ([1, 1, 0, 0], [0, 1, 1, 0], [0, 0, 0, 1], [1, 0, 1, 0])

Last date to submit the solution 23:59 (UK Time) Sunday 12th November 2023.