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mirror image of a square matrix


Let me define the mirror image of a matrix as the operation of flipping
the columns such that the last column becomes the first, the second
last becomes the second and so on. I would like to know if this can be
done simpler than as follows:

mat=Table[Random[],{n},{n}]
matR=Transpose[Reverse[Transpose[mat]]]
Are there any built in functions for operations like these?
/ravi


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