The Weekly Challenge

HEADLINES

Welcome to the Week #243 of The Weekly Challenge.

Let us all welcome two new members to Team PWC i.e. Robert McIntosh and Nelo Tovar.

We received the first blog post by Robert McIntosh.

Nelo Tovar shared his first contributions to the Task #1 and Task #2 in Perl.

Please do checkout the interview with the latest champion, Packy Anderson.

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


`Week`	`Perl`	`Raku`	`Blog`
`238`	60	37	29
`239`	59	41	28
`240`	62	36	26
`241`	59	31	24
`242`	57	37	32

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


`Week`	`Guests`	`Contributions`	`Languages`
`238`	15	79	24
`239`	20	84	24
`240`	17	85	26
`241`	14	68	21
`242`	14	57	20

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     (1961)
 2. Ruby       (619)
 3. Haskell    (606)
 4. Lua        (544)
 5. Rust       (461)
 6. C          (457)
 7. C++        (435)
 8. BQN        (315)
 9. Go         (295)
10. JavaScript (285)

Blogs with Creative Title

1. Missing Flips by Adam Russell.

2. Missing Matrix by Arne Sommer.

3. Missing Members by Augie De Black Jr.

4. Flip the Script by Bob Lied.

5. Like The Deserts Miss The Rain by Dave Jacoby.

6. I’m a Map by Ian Rifkin.

7. Missing Reversed Inversions by Jorg Sommrey.

8. grepping the arrays for fun and profit! by Luca Ferrari.

9. Checking and Flipping by Matthias Muth.

10. Flip the Missing Matrix Members by Packy Anderson.

11. Flipping Members by Peter Campbell Smith.

12. One Of Our Matrices Is Missing by Roger Bell_West.

GitHub Repository Stats

1. Commits: 35,107 (`+115`)

2. Pull Requests: 89,037 (`+43`)

3. Contributors: 238 (`+1`)

4. Fork: 300

5. Stars: 163

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 - 242 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

1. `Robert McIntosh`, an experienced Raku hacker from USA, joined the `Team PWC`.

2. Nelo Tovar, an experienced Perl hacker joined the `Tean 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 #242.

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

Task 1: Reverse Pairs

Submitted by: Mohammad S Anwar

You are given an array of integers.

Write a script to return the number of reverse pairs in the given array.

A reverse pair is a pair (i, j) where: a) 0 <= i < j < nums.length and b) nums[i] > 2 * nums[j].

Example 1

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

(1, 4) => nums[1] = 3, nums[4] = 1, 3 > 2 * 1
(3, 4) => nums[3] = 3, nums[4] = 1, 3 > 2 * 1

Example 2

Input: @nums = (2, 4, 3, 5, 1)
Output: 3

(1, 4) => nums[1] = 4, nums[4] = 1, 4 > 2 * 1
(2, 4) => nums[2] = 3, nums[4] = 1, 3 > 2 * 1
(3, 4) => nums[3] = 5, nums[4] = 1, 5 > 2 * 1

Task 2: Floor Sum

Submitted by: Mohammad S Anwar

You are given an array of positive integers (>=1).

Write a script to return the sum of floor(nums[i] / nums[j]) where 0 <= i,j < nums.length. The floor() function returns the integer part of the division.

Example 1

Input: @nums = (2, 5, 9)
Output: 10

floor(2 / 5) = 0
floor(2 / 9) = 0
floor(5 / 9) = 0
floor(2 / 2) = 1
floor(5 / 5) = 1
floor(9 / 9) = 1
floor(5 / 2) = 2
floor(9 / 2) = 4
floor(9 / 5) = 1

Example 2

Input: @nums = (7, 7, 7, 7, 7, 7, 7)
Output: 49

Last date to submit the solution 23:59 (UK Time) Sunday 19th November 2023.