Dear All,


I am trying to define a loop for a m*n matrix, where i=1:n and j=1:m. Unlike
the usual for loop, i should go in the following way:

For j=1,
i=1,2,3,....n
For j=2,
i=n,n-1,n-2,......,1
For j=3,
i=1,2,3,.....n etc.
which means i should go in either increasing or decreasing order
alternatively.
Can anyone please help me in doing this?


Thanks,
Cassie

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