HEADLINES
We have seen rise of interest in the Perl Weekly Challenge recently and with that we have now 150 members in the Team PWC. We hope to keep you all engaged and interested. Please do share new ideas for challenges and any suggestion for improvement. We would like to thank Ruben Westerberg for suggesting task. We would also like to thank Herbert Bollermann (@HrBollermann) for interesting ideas for the task. Our superhero, Ryan Thompson, also offered ideas for future tasks. We will definitely use in the coming weeks, giving credit where it is due.
I noticed we have 300 followers now on official Twitter account. We are thankful to each and everyone for their support and encouragement.
Last but not the least, I woud like to thank each and every member for their support and encouragement.
RECAP
Quick recap of the “Perl Weekly Challenge - 048” by Mohammad S Anwar.
PERL REVIEW
Please checkout Perl** solutions review of the “Perl Weekly Challenge - 047”** by Ryan Thompson.
If you missed any past reviews then please checkout the collection.
RAKU REVIEW
Please checkout Raku** solutions review of the “Perl Weekly Challenge - 047”** by Ryan Thompson.
If you missed any past reviews then please checkout 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
Jen Guerra, an experienced Perl hacker from Massachusetts, USA.
Ian Rifkin, an experienced Perl hacker from Massachusetts, USA.
Jonas Berlin, an experienced Raku hacker from Finland.
Please find out How to contribute?, if you have any doubts.
GUESTS
Jonas Berlin shared solution to Task #1 and Task #2 in Rust.
Lubos Kolouch shared solutions to Task #1 and Task #2 in Python.
Orestis Zekai shared solutions to Task #1 and Task #2 in Python.
Ulrich Rieke shared solution to Task #2 in Haskell.
User Person shared solutions to Task #1 and Task #2 in Python.
Please find out past solutions by respected guests. Please do share your creative solutions in other languages.
TASK #1
Smallest Multiple
Write a script to accept a positive number as command line argument and print the smallest multiple of the given number consists of digits 0 and 1.
For example:
For given number 55, the smallest multiple is 110 consisting of digits 0 and 1.
TASK #2
LRU Cache
Write a script to demonstrate LRU Cache feature. It should support operations get and set. Accept the capacity of the LRU Cache as command line argument.
Definition of LRU: An access to an item is defined as a get or a set operation of the item. “Least recently used” item is the one with the oldest access time.
For example:
capacity = 3
set(1, 3)
set(2, 5)
set(3, 7)
Cache at this point:
[Least recently used] 1,2,3 [most recently used]
get(2) # returns 5
Cache looks like now:
[Least recently used] 1,3,2 [most recently used]
get(1) # returns 3
Cache looks like now:
[Least recently used] 3,2,1 [most recently used]
get(4) # returns -1
Cache unchanged:
[Least recently used] 3,2,1 [most recently used]
set(4, 9)
Cache is full, so pushes out key = 3:
[Least recently used] 2,1,4 [most recently used]
get(3) # returns -1
I found this amazing post talking about LRU Cache.
Last date to submit the solution 23:59 (UK Time) Sunday 1st March 2020.