I think your issue is you're getting stuck in an infinite while loop when the solution doesn't reduce to 0. The random tests include random numbers that won't necessarily reduce to 0 and should return false.

Hope that helps!

just use the spoiler flag, that the tool for that. ;)

EDIT: too late ;)
But use indentation so that your code is readable.

Could you post your solution so I could try and replicate your problem? Thanks!

do not expect any upper bound, act like if it might be infinite.

The last test is a series of random arrays with random lengths. I wonder how that is effecting your solution and the callstack error?

Hmmmmm, I will take a look.

This should be adressed more clearly.

The object exists already, the letters are all uppercase. return firstName['D'] for example will get you the name for 'D'.

Hi, what language you used?