masterclass

If I'm not mistaken, I think it compares the ascii or unicode number for it. '4' in ascii would be int 52 and '5' would be int 53, '6' is int 54 and so forth so anything below int 53, put a '0' and anything above put a '1'

wowza

One of my favorite jokes: If you have a problem and you think regex is the solution, now you have two problems.

Nice solution.

terrible

intresting it just compiled all the 4-5 lines of code to a one liner (but, i'm being honest here it can be optimised)...
REGARDLESS, GOOD JOB

Great job, I decided as well.

wtf🤯

Nice dude I spent so much time on this problem

n>0 is treated as 1 if True. when passed to sum() is the same as doing sum(1 if n>0...). Althoug I've read somewhere it's not good practice to use booleans as integers since you are violating some principle. Can't recall which one now.

there are only a few cases in which these smileys are created, if we just create them into one list and then just check them and run the sum function it would be more faster for these test cases.

What happens if prod is MAX_UNSIGNED_LONG_LONG?
The while loop will never break (or you'll get ull overflow error)

don't know regex so didn't take this approach!

strings are ordered lexicographically

and if you attempt to compare a string to an int then whichever one of them you ask they'll tell you they don't know which comes first. (operators boil down to method calls on one of the operands. you're asking one of the values if it's smaller than the other)

javascript on the other hand, is a mistake, and will convert mixed values into a single type and then compare for you. all friendly and with a smile on its face. "friendly" here really just means it did something other than what you said, which is a great way to make your code full of difficult to find bugs.