Given n as input, generate a n-by-n matrix 'O' using 0 and 1 .
[1 1 1 1
1 0 0 1
1 0 0 1
1 1 1 1]
three solution, all great.
middleAsColumn: Return all but first and last element as a column vector
Fill a zeros matrix
CONVERT TAN TO SIN
Matlab Basics - Pick out parts of a vector
Remove the first, third and fifth rows of a matrix
Find all repeated numbers
Draw a 'N'!
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