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  1. letters = char([65:90 97:122]);
  2. randl = @(x) letters(randi(numel(letters), size(x)));
  3. m = repmat('Hello, World!', 10, 1);
  4. m(:, 1:2:end) = upper(m(:, 1:2:end));
  5. m(:, 2:2:end) = lower(m(:, 2:2:end));
  6. m(:, 3:3:end) = randl(m(:, 3:3:end))
Success #stdin #stdout 0.26s 54768KB
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Standard input is empty
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m =

HeglOn wirLm!
HehlOA wYrLp!
HeIlOp wJrLU!
HeclOf wQrLW!
HeylOB wsrLu!
HeTlOP wkrLL!
HeplOF wirLZ!
HellOZ wJrLx!
HeflON wErLd!
HePlOr wprLt!
https://ideone.com/j9EsUn
language:
Octave (octave 4.4.1)
created:
7 years ago
visibility:
secret

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