Guess the formula to transform strings as follows:
'Hello World!' --> 'Ifmmp Xpsme!'
'Can I help you?' --> 'Dbo J ifmq zpv?'
Simple and interesting.
Find the sum of the elements in the "second" diagonal
Given a 4x4 matrix, swap the two middle columns
Create incrementing array
Flexible Anonymous Function
Handle to an array of functions
Get ranks of values in a vector
Two-output anonymous function?
Create an 'arrow-head" matrix
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