Unfold a 2-D matrix to a 1-D array in zig-zag order, e.g., for matrix
[ 1 2 3 ;
4 5 6 ;
7 8 9 ]
the resulting 1-D array should be
[ 1 2 4 7 5 3 6 8 9 ]
Return the 3n+1 sequence for n
Matrix which contains the values of an other matrix A at the given locations.
Set some matrix elements to zero
Replicate elements in vectors
Write a function man that takes a row vector v and returns a matrix H as follows..
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