The Weekly Challenge

HEADLINES

Welcome to the Week #328 of The Weekly Challenge.

Let’s us all welcome, Ulrich Reining, an expert Perl hacker from Germany. Thanks for the first contributions in Perl.

Looks like holiday season kicked in, we still managed to get decent amount of contributions.

Have fun and enjoy your break.

Happy Hacking!!

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


`Week`	`Perl`	`Raku`	`Blog`
`323`	46	22	26
`324`	50	24	17
`325`	46	25	29
`326`	48	27	28
`327`	48	24	15

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


`Week`	`Guests`	`Contributions`	`Languages`
`323`	12	60	21
`324`	12	38	15
`325`	12	59	21
`326`	13	64	23
`327`	14	36	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     (3448)
 2. Rust       (930)
 3. Ruby       (805)
 4. Haskell    (787)
 5. Lua        (730)
 6. C++        (627)
 7. C          (594)
 8. JavaScript (568)
 9. Go         (503)
10. BQN        (448)

Blogs with Creative Title

1. Missing Integers Don’t Make Me MAD, Just Disappointed by Adam Russell.

2. Missing Mad by Arne Sommer.

3. Absolutely Missing Differences by Jorg Sommrey.

4. Missing and Mad by Matthias Muth.

5. Missing Absolute Distance by Packy Anderson.

6. Missing and mad by Peter Campbell Smith.

7. I Miss My Mind the Most by Roger Bell_West.

GitHub Repository Stats

1. Commits: 44,145 (`+106`)

2. Pull Requests: 12,243 (`+37`)

3. Contributors: 261 (`+1`)

4. Fork: 329 (`+1`)

5. Stars: 194 (`+2`)

With start of Week #268, we have a new sponsor Lance Wicks until the end of year 2025. Having said we are looking for more sponsors so that we can go back to weekly winner. If anyone interested please get in touch with us at perlweeklychallenge@yahoo.com. Thanks for your support in advance.

RECAP

Quick recap of The Weekly Challenge - 327 by Mohammad Sajid 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

Ulrich Reining, an expert Perl hacker from Germany joined 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 #327.

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

Task 1: Replace all ?

Submitted by: Mohammad Sajid Anwar

You are given a string containing only lower case English letters and ?.

Write a script to replace all ? in the given string so that the string doesn’t contain consecutive repeating characters.

Example 1

Input: $str = "a?z"
Output: "abz"

There can be many strings, one of them is "abz".
The choices are 'a' to 'z' but we can't use either 'a' or 'z' to replace the '?'.

Example 2

Input: $str = "pe?k"
Output: "peak"

Example 3

Input: $str = "gra?te"
Output: "grabte"

Task 2: Good String

Submitted by: Mohammad Sajid Anwar

You are given a string made up of lower and upper case English letters only.

Write a script to return the good string of the given string. A string is called good string if it doesn’t have two adjacent same characters, one in upper case and other is lower case.

Example 1

Input: $str = "WeEeekly"
Output: "Weekly"

We can remove either, "eE" or "Ee" to make it good.

Example 2

Input: $str = "abBAdD"
Output: ""

We remove "bB" first: "aAdD"
Then we remove "aA": "dD"
Finally remove "dD".

Example 3

Input: $str = "abc"
Output: "abc"

Last date to submit the solution 23:59 (UK Time) Sunday 6th July 2025.