The Weekly Challenge

HEADLINES

Welcome to the Week #218 of The Weekly Challenge.

Let us all welcome a new member to Team PWC, Israel C. Batista. Thank you for your first contributions in Perl.

Today, we are giving away Coupon #41 to Rob Turner for the book, Learning Perl Exercises by brian d foy. I will share the details with you in a separate email. Just now I noticed we don’t have your email address, can you please share with us here perlweeklychallenge@yahoo.com?

PAST WINNERS



`S. No.`	`Name`	`S. No.`	`Name`

1.	`Cheok-Yin Fung`	2.	`W. Luis Mochan`
3.	`Robert DiCicco`	4.	`Kueppo Wesley`
5.	`Solathian`	6.	`Dario Mazzeo`
7.	`Peter Campbell Smith`	8.	`Kjetil Skotheim`
9.	`Neils van Dijke`	10.	`Laurent Rosenfeld`
11.	`Duncan C. White`	12.	`Ali Moradi`
13.	`Jorg Sommrey`	14.	`James Smith`
15.	`Alexander Pankoff`	16.	`Simon Green`
17.	`Robbie Hatley`	18.	`Bob Lied`
19.	`Athanasius`	20.	`David Ferrone`
21.	`Thomas Kohler`	22.	`Adam Russell`
23.	`E. Choroba`	24.	`Pip Stuart`
25.	`Roger Bell_West`	26.	`Flavio Poletti`
27.	`Dave Jacoby`	28.	`Mariano Spadaccini`
29.	`Lubos Kolouch`	30.	`Matthew Neleigh`
31.	`Paulo Custodio`	32.	`Tyler Bird`
33.	`Carlos Oliveira`	34.	`Avery Adams`
35.	`Matthias Muth`	36.	`Leo Manfredi`
37.	`Peter Meszaros`	38.	`Arne Sommer`
39.	`Jaldhar H. Vyas`	40.	`Mark Anderson`
41.		42.
43.		44.
45.		46.
47.		48.
49.		50.

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


`Week`	`Perl`	`Raku`	`Blog`
`213`	49	28	23
`214`	38	18	13
`215`	60	32	23
`216`	39	22	22
`217`	59	30	23

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


`Week`	`Guests`	`Contributions`	`Languages`
`213`	11	33	13
`214`	05	22	08
`215`	10	47	16
`216`	11	33	14
`217`	09	34	13

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  (1532)
 2. Haskell (550)
 3. Ruby    (515)
 4. Lua     (471)
 5. C       (422)
 6. C++     (374)
 7. Rust    (359)
 8. BQN     (269)
 9. Go      (257)
10. Java    (223)

Blogs with Creative Title

1. Ma[tri]x by Arne Sommer.

2. Flattening the Matrix by Avery Adams.

3. Big and Boundless in The Matrix by Bruce Gray.

4. Did I misunderstand? by Luca Ferrari.

5. Permutations not needed! by Matthias Muth.

6. Sorted them both by Peter Campbell Smith.

7. Sorted Max by Roger Bell_West.

GitHub Repository Stats

1. Commits: 32,541 (`+133`)

2. Pull Requests: 8,110 (`+45`)

3. Contributors: 222

4. Fork: 280 (`+1`)

5. Stars: 153 (`+1`)

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 - 217 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

Israel C. Batista, an experienced Perl hacker from Marília, Sao Paulo, 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.

GUESTS

Please check out the guest contributions for the Week #217.

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

Task 1: Maximum Product

Submitted by: Mohammad S Anwar

You are given a list of 3 or more integers.

Write a script to find the 3 integers whose product is the maximum and return it.

Example 1

Input: @list = (3, 1, 2)
Output: 6

1 x 2 x 3 => 6

Example 2

Input: @list = (4, 1, 3, 2)
Output: 24

2 x 3 x 4 => 24

Example 3

Input: @list = (-1, 0, 1, 3, 1)
Output: 3

1 x 1 x 3 => 3

Example 4

Input: @list = (-8, 2, -9, 0, -4, 3)
Output: 216

-9 × -8 × 3 => 216

Task 2: Matrix Score

Submitted by: Mohammad S Anwar

You are given a m x n binary matrix i.e. having only 1 and 0.

You are allowed to make as many moves as you want to get the highest score.

A move can be either toggling each value in a row or column.

To get the score, convert the each row binary to dec and return the sum.

Example 1:

Input: @matrix = [ [0,0,1,1],
                   [1,0,1,0],
                   [1,1,0,0], ]
Output: 39

Move #1: convert row #1 => 1100
         [ [1,1,0,0],
           [1,0,1,0],
           [1,1,0,0], ]

Move #2: convert col #3 => 101
         [ [1,1,1,0],
           [1,0,0,0],
           [1,1,1,0], ]

Move #3: convert col #4 => 111
         [ [1,1,1,1],
           [1,0,0,1],
           [1,1,1,1], ]

Score: 0b1111 + 0b1001 + 0b1111 => 15 + 9 + 15 => 39

Example 2:

Input: @matrix = [ [0] ]
Output: 1

Last date to submit the solution 23:59 (UK Time) Sunday 28th May 2023.