rot90 - Rotate matrix 90 degrees
ROT90(A) is the 90 degree counterclockwise rotation of matrix A.
ROT90(A,K) is the K*90 degree rotation of A, K = +-1,+-2,...
This function has been imported from MatLab
A=[1,2,3;4,5,6]; B=rot90(A) C=rot90(A,2) D=rot90(A,3) F=rot90(A,-1) // End of example rot90
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