Trouble in the test suite :)
I think the problem is with Cody itself today. It's doing weird things. If you submit this solution again it fails.
letter yes yes & letter no no
Return the first and last characters of a character array
Given a matrix, swap the 2nd & 3rd columns
Celsius to Fahrenheit converter
Back to basics 6 - Column Vector
Back to basics 25 - Valid variable names
Back to basics 13 - Input variables
Back to basics 26 - Keywords
7 segment LED display
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