The Weekly Challenge

HEADLINES

Welcome to the Week #207 of The Weekly Challenge.

E. Alvarez blog post for you to keep you engaged.

First Monday of the month and time to declare next champion. With great pleasure, I announce Solathian as our next champion. He joined the Team PWC in the Week #122. As of today he has contributed 45 solutions in Perl.

Today, we are giving away Coupon #30 to Matthew Neleigh for the book, Learning Perl Exercises by brian d foy. I will share the details with you in a separate email.

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.
31.		32.
33.		34.
35.		36.
37.		38.
39.		40.
41.		42.
43.		44.
45.		46.
47.		48.
49.		50.

Another bumper week with 100+ contributions. Thank you Team PWC.


`Week`	`Perl`	`Raku`	`Blog`
`184`	57	31	17
`185`	61	35	19
`186`	58	33	20
`187`	51	34	20
`188`	63	36	16
`189`	62	35	18
`190`	55	32	23
`191`	56	38	21
`192`	59	41	23
`193`	55	31	22
`194`	58	32	19
`195`	58	29	19
`196`	51	29	20
`197`	49	31	20
`198`	54	37	23
`199`	52	32	22
`200`	55	33	23
`201`	55	29	22
`202`	50	27	24
`203`	52	24	18
`204`	56	31	22
`205`	64	30	25
`206`	59	29	23

I would like to thank every guest contributors for making it special every week. Last week we received 47 guest contributions in 15 languages

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  (1346)
 2. Haskell (537)
 3. Ruby    (470)
 4. Lua     (448)
 5. C       (334)
 6. C++     (330)
 7. Rust    (325)
 8. BQN     (268)
 9. Go      (247)
10. Java    (220)

Blogs with Creative Title

1. Paired Time by Arne Sommer.

2. Maximum sum of pair minimums by Bob Lied.

3. Partial Content by Dave Jacoby.

4. hard times! by Luca Ferrari.

5. Array Time! by Roger Bell_West.

GitHub Repository Stats

1. Commits: 30,900 (`+128`)

2. Pull Requests: 7,631 (`+41`)

3. Contributors: 219 (`+1`)

4. Fork: 276

5. Stars: 151

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 - 206 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 #206.

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

Task 1: Keyboard Word

Submitted by: Mohammad S Anwar

You are given an array of words.

Write a script to print all the words in the given array that can be types using alphabet on only one row of the keyboard.

Let us assume the keys are arranged as below:

Row 1: qwertyuiop
Row 2: asdfghjkl
Row 3: zxcvbnm

Example 1

Input: @words = ("Hello","Alaska","Dad","Peace")
Output: ("Alaska","Dad")

Example 2

Input: @array = ("OMG","Bye")
Output: ()

Task 2: H-Index

Submitted by: Mohammad S Anwar

You are given an array of integers containing citations a researcher has received for each paper.

Write a script to compute the researcher’s H-Index. For more information please checkout the wikipedia page.

The H-Index is the largest number h such that h articles have at least h citations each. For example, if an author has five publications, with 9, 7, 6, 2, and 1 citations (ordered from greatest to least), then the author’s h-index is 3, because the author has three publications with 3 or more citations. However, the author does not have four publications with 4 or more citations.

Example 1

Input: @citations = (10,8,5,4,3)
Output: 4

Because the 4th publication has 4 citations and the 5th has only 3.

Example 2

Input: @citations = (25,8,5,3,3)
Output: 3

The H-Index is 3 because the fourth paper has only 3 citations.

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