using strrep multiple times

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James Knight
James Knight 2019-10-18
编辑： Guillaume 2019-10-18
Hi
I want to use strrep multiple times but , whats the correct way of doing this without retyping sstrep
Thanks in advance
choices= strrep(strrep(strrep(usertext, 'left', 'right'), 'up', 'down'), 'black' , 'white');

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回答（2 个）

Guillaume
Guillaume 2019-10-18
Use replace instead:
>> usertext = 'left black left right up down upside white upleft';
>> replace(usertext, {'left', 'up', 'black'}, {'right', 'down', 'white'})
ans =
'right white right right down down downside white downright'
Adam Danz
Adam Danz 2019-10-18
This demo is dedicated to Kazuhisa Hashimoto.
usertext = 'up, up, down, down, left, right, left, right, b, a, start.';
s = regexprep(usertext,{'left','up','b'},{'right','down','a'})
  1 个评论
Guillaume
Guillaume 2019-10-18
编辑：Guillaume 2019-10-18
Should have thought of that usertext for my answer ;)
+1 just for that.
However, be careful that some characters in the regexprep need to be escaped. e.g.
regexprep(usertext, {'.', '+'}, {',', '-'})
will lead to unexpected results. For that reason replace is safer.

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