Volume of this donut
Fill a zeros matrix
Detect a number and replace with two NaN's
Find the index of the largest value in any vector X=[4,3,4,5,9,12,0,4.....5]
Vectors counting by 2
Better bullseye matrix
Back to basics 14 - Keywords
Back to basics 22 - Rotate a matrix
Back to basics 26 - Keywords
7 segment LED display
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