The Weekly Challenge

10. TASK #2: Decompressed List

HEADLINES

Welcome to the Week #326 of The Weekly Challenge.

Thank you, HVukman, for introducing a new programming language, PicoLisp. and sharing solution to Task #2.

Thank you, Team PWC, for your support and contributions. We have reached the peak, 99, twice this year. Having said, we are still looking for first breakthrough.

Contributions in guest languages have been consistent except in the Week #324 when it dipped very low. Having said, we made good progress in the Week #325,

Keep sharing knowledge every week.

Happy Hacking!!

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


`Week`	`Perl`	`Raku`	`Blog`
`321`	46	26	27
`322`	44	24	25
`323`	46	22	26
`324`	50	24	17
`325`	46	24	29

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


`Week`	`Guests`	`Contributions`	`Languages`
`321`	13	61	23
`322`	13	56	19
`323`	12	60	21
`324`	12	38	15
`325`	12	59	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     (3424)
 2. Rust       (922)
 3. Ruby       (803)
 4. Haskell    (783)
 5. Lua        (728)
 6. C++        (623)
 7. C          (590)
 8. JavaScript (566)
 9. Go         (497)
10. BQN        (442)

Blogs with Creative Title

1. Consecutive Search for Discount Prices by Adam Russell.

2. One Final by Arne Sommer.

3. Consecutive Discounts by Jorg Sommrey.

4. filter and iterate by Luca Ferrari.

5. Consecutive, but Maybe Not Final by Matthias Muth.

5. The Final Count One! by Packy Anderson.

6. Counts and discounts by Peter Campbell Smith.

7. Finality of the One Consecutive Price by Roger Bell_West.

8. Counting the discounts by Simon Green.

GitHub Repository Stats

1. Commits: 43,931 (`+98`)

2. Pull Requests: 12,170 (`+38`)

3. Contributors: 260

4. Fork: 328 (`+1`)

5. Stars: 191

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 - 325 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

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 #325.

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

Task 1: Day of the Year

Submitted by: Mohammad Sajid Anwar

You are given a date in the format YYYY-MM-DD.

Write a script to find day number of the year that the given date represent.

Example 1

Input: $date = '2025-02-02'
Output: 33

The 2nd Feb, 2025 is the 33rd day of the year.

Example 2

Input: $date = '2025-04-10'
Output: 100

Example 3

Input: $date = '2025-09-07'
Output: 250

Task 2: Decompressed List

Submitted by: Mohammad Sajid Anwar

You are given an array of positive integers having even elements.

Write a script to to return the decompress list. To decompress, pick adjacent pair (i, j) and replace it with j, i times.

Example 1

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

Pair 1: (1, 3) => 3 one time  => (3)
Pair 2: (2, 4) => 4 two times => (4, 4)

Example 2

Input: @ints = (1, 1, 2, 2)
Output: (1, 2, 2)

Pair 1: (1, 1) => 1 one time  => (1)
Pair 2: (2, 2) => 2 two times => (2, 2)

Example 3

Input: @ints = (3, 1, 3, 2)
Output: (1, 1, 1, 2, 2, 2)

Pair 1: (3, 1) => 1 three times => (1, 1, 1)
Pair 2: (3, 2) => 2 three times => (2, 2, 2)

Last date to submit the solution 23:59 (UK Time) Sunday 22nd June 2025.