There are, here at Cody, a lot of people who can code very well on Matlab. But I find that every one who publish a problem should have the humility to wait for many solvers before he/she put his/her own solution. But that's only my personal opinion. ;-)
You can't see my solution until u make working one with the same size, so I think it doesn't matter.
Column norms of a matrix
Determine if input is a perfect number
Area of an Isoceles Triangle
Volume and area of a sphere
How many digits are there?
Number of odd and even elements within matrix
Mean and standard deviation of times in string
Return area of square
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