I am not sure this method can be called a cipher since there is probably no way to recover the original number. You should probably call it a hash.
yeah, that's right. Thanks, I changed it to hash and changed some test cases too.
Return the largest number that is adjacent to a zero
Remove the vowels
Omit columns averages from a matrix
convert matrix to single column
Find the Oldest Person in a Room
Decipher the number 2 - 3 keys
decipher the number 1 - same key for all digits :)
Decipher the number 3 - 10 keys
Decipher the number 4 - 3 keys - order [1 2 3 2 1 2 3 ......]
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