change the signs of the even index entries of the reversed vector
vec = [4 -1 -2 9]
ans = [9 2 -1 -4]
vec = [-4 -1 -2 -9]
ans = [-9 2 -1 4]
The test suite has been expanded.
Increment a number, given its digits
Back to basics 8 - Matrix Diagonals
Calculate the area of a triangle between three points
Find the index of n in magic(n)
Insert zeros into vector
Moving average (variable kernel length)
Duplicate a character
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