For given input matrix a, rotate it by 90 degrees and find the sum of the diagonals.
1 2 3 4
5 6 7 8
8 10 12 -2
-1 -3 -5 -7
Arrange Vector in descending order
Back to basics 12 - Input Arguments
Find nth maximum
multiply by three
Determine the mean of matrix
surface areas of a cylinder
Product of all elements in an array
ASCII sum of phrases
Percentage of zeros in a matrix of only 1s and 0s
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