Anyone has suggestions on a clean way of doing this?
How can I get rid of the for-loop?
Replace the for-loop simply by: y = yy - '0' , or by: y = yy - 48 .
Better bullseye matrix
select the primes of a vector
Back to basics - mean of corner elements of a matrix
Matlab Basics - Convert a row vector to a column vector
Flip the bit
Maintain shape of logical-index mask
So many choices
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