Please read the issue posted above. Understanding the flaw, you can re-write and re-submit your code.

Best of luck!

Python (at least):

Random Tests are not guaranteed to fail a faulty solution such as this one that fails to account for upper / lowercase counting as the same char, as shown the 3 test cases below.

input  ' iwDwW59viI;LMxADnEc5XMCVVrX3hp0u '
result 'W' should equal '9'

input  'f.FGP1.H59u n3'
result 'F' should equal 'G'

input  'peLiEWOfbS,Brl1PsUcBgmaRnMShh5q8osKoyziKTvjv'
result 'E' should equal 'W'

it's not a completely ridiculous solution though.

Both open and hidden tests are way to limited but otherwise a pretty fun kata.

According to the creator of this kata:

It looks like when you are adding sandpile 1 to sandpile 2, one of them is getting modified. The add method should return a new sandpile with the final value, while the original two sandpiles are left in their original state.

Either that, or you have something deeper that's wrong, such as sharing the data between two sandpiles. Basically, the test is checking to make sure the two sandpiles have the same values as they started with.

i did this and worked

I'm getting the same error, but the code works fine for every other test

OP left the building, translations will come eventually if the right person stumbles upon the right kata at the right time ^^, closing!

What's meen testUpcomingBigNumbers
It's last crash test, and i don't understand how will make correctly

Didnt know I can print in the results (:face:palm)
Printed and found the issue
thanks for the advice

Why don't you print the input of the test your code fails? If it says upcoming palindromic number, neither of them belong to it, all of those are interesting. Not a kata issue.

my code (Java 17) fail on test testUpcomingPalindrome with error: Should handle upcoming palindromic numbers expected:<1> but was:<2>
I ran my code on all intergers between > 99 and < 1B for any number which is upcoming palindromic and on those numbers I ran the check to see if they are intersting (omitting the palindrome check). I only got the following numbers:

100000000

99999999

999999999

99999

100000

10000000

9999999

which, as you can see, fulfills either the first rule for intersting or the second...
so I believe that there is an error

any ideas?

For me, a golang learner, great kata, thanks

I understand it is letter "F" and "I"

No, it isn't. That's why the test is labeled odd characters. Try selecting that, it is a single char.