change the signs of the even index entries of the reversed vector
example 1 vec = [4 -1 -2 9] ans = [9 2 -1 -4]
example2 vec = [-4 -1 -2 -9] ans = [-9 2 -1 4]
The test suite has been expanded.
Clever
Replace NaNs with the number that appears to its left in the row.
1614 Solvers
272 Solvers
Do Fast Fourier Transformation
166 Solvers
389 Solvers
232 Solvers