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.
How many trades represent all the profit?
Create an n-by-n null matrix and fill with ones certain positions
Add two numbers
Solving Quadratic Equations (Version 1)
Duplicate a character
Insert zeros into vector
Moving average (variable kernel length)
Symmetry of vector
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