Decrypt Polybius square. Please refer to Problem 1150 Polybius Square.
input [13 33 14 51] output 'cody';
input [23 0 26 33 44 15 0 31 11 42 26 11 12] returns 'i love matlab'.
Most nonzero elements in row
Find the palindrome
Sum of first n terms of a harmonic progression
Next Higher Power of B
Decrypt a secret message!
Lunar Arithmetic (Addition)
Challenging perms function!
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