Guess the formula to transform strings as follows:
'Hello World!' --> 'Ifmmp Xpsme!'
'Can I help you?' --> 'Dbo J ifmq zpv?'
Simple and interesting.
Connect Four Win Checker
Tell me the slope
Replicate elements in vectors
Insert zeros into vector
Get ranks of values in a vector
Replace multiples of 5 with NaN
Apply a function array to an array of numbers
Create an 'arrow-head" matrix
Count up then down
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