With respect to the square brackets —
x = randn(1,5);
fprintf('[%8.4f]\n',x)
‘Also, how do I export the results in excel format.’
However, it might be best to write it line-by-line to a text file, and use the approopriate combination of 'HeaderLines' and other options with respect to reading it (as a table or matrix). Writing it and reading it later are going to be something of a challenge, regardless.
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