Given a vector of positive integers
a = [ 3 2 4 ];
create the matrix where the i th column contains the vector 1:a(i) possibly padded
b = [ 1 1 1
2 2 2
3 0 3
0 0 4 ];
Which values occur exactly three times?
Make a Palindrome Number
Flip the main diagonal of a matrix
Set the array elements whose value is 13 to 0
Unique values without using UNIQUE function
Return unique values without sorting
Get the elements of diagonal and antidiagonal for any m-by-n matrix
Fill a zeros matrix
Convert a structure into a string
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