Perl Weekly Challenge - 046

Monday, Feb 3, 2020| Tags: Perl, Raku


Apology to all team members, the Weekly Challenge is still not on the track. Things have improved but there is still a lot to do. I am pleasantly suprised by the offer of help by all the team members. Ryan Thompson offered to do Perl Reviews, which is a big help. I will now have one less thing to worry about every week. Thanks Ryan Thompson.

Saif Ahmed created a very hand tool EZPWC. This is going to help you streamline the process of submitting solutions to Weekly Challenge. Please do provide your feedback/suggestions.

I know, I haven’t forgotten about the monthly winner. It is time to pick our first winner of year 2020. We declare Wanderdoc as our first monthly winner for the month January 2020. Congratulations Wanderdoc, keep contributing and inspiring us.

Last but not the least, we woud like to thank each and every member for their support and encouragement.


Quick recap of the “Perl Weekly Challenge - 045” by Mohammad S Anwar.


Please checkout Perl** solutions review of the “Perl Weekly Challenge - 044”** by Ryan Thompson.

If you missed any past reviews then please checkout the collection.


If you missed any past reviews then please checkout the collection.


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.


Please find out How to contribute?, if you have any doubts.


Burkhard Nickels shared solutions to Task #1 and Task #2 in Python.

Orestis Zekai shared solutions to Task #1 and Task #2 in Python.

Rage311 shared solution to Task #1 in Rust.

Ulrich Rieke shared solutions to Task #1 and Task #2 in Haskell.

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


Cryptic Message

The communication system of an office is broken and message received are not completely reliable. To send message Hello, it ended up sending these following:

H x l 4 !
c e - l o
z e 6 l g
H W l v R
q 9 m # o

Similary another day we received a message repeatedly like below:

P + 2 l ! a t o
1 e 8 0 R $ 4 u
5 - r ] + a > /
P x w l b 3 k \
2 e 3 5 R 8 y u
< ! r ^ ( ) k 0

Write a script to decrypt the above repeated message (one message repeated 6 times).

HINT: Look for characters repeated in a particular position in all six messages received.


Is the room open?

There are 500 rooms in a hotel with 500 employees having keys to all the rooms. The first employee opened main entrance door of all the rooms. The second employee then closed the doors of room numbers 2,4,6,8,10 and so on to 500. The third employee then closed the door if it was opened or opened the door if it was closed of rooms 3,6,9,12,15 and so on to 500. Similarly the fourth employee did the same as the third but only room numbers 4,8,12,16 and so on to 500. This goes on until all employees has had a turn.

Write a script to find out all the rooms still open at the end.

Last date to submit the solution 23:59 (UK Time) Sunday 9th February 2020.


If you have any suggestions or ideas then please do share with us.

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