Distance walked 1D
Reverse a matrix
Square a Number
Decipher the message - 3 key
Cipher or Decipher the number according to the second input - 3 keys - order [1 2 3 2 1 2 3 ......]
Cipher or decipher the number according to the second input - 10 keys
Decipher the message - same key for all digits
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