'Drawing a colored grid with colors based on a text file
How can a given sequence of N digits (stored simply as a string in some text file "digits.txt", like 3204815627....) be depicted
as a PxQ array (where PxQ=N) consisting of squares (of R pixels in width & length),
the color of each square being determined by its corresponding position number in the given sequence of N digits.
We assume that each digit corresponds to some specific color (e.g., 0=green, 1=blue, 2=grey etc.)
and that the squares are numbered from 1 to N consecutively along the array rows.
So, can the above be achieved using HTML, CSS & JavaScript in a
parametric way based on N, P, Q and R?
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