Recognize Number/Special Characters

Nil
2011 11 8
1 个回答
回答已采纳
7 次查看（30 天）

0 个投票

Hi,
I have below input string and from it I want to recognize digits/special characters, May be some flag can be set
txt='har23#$'
Like if alphabet then flag=1 and for digits/Special Characters flag=0
Pls provide me some direction..
Thanks in Advance..

1 个评论
显示 -1更早的评论 隐藏 -1更早的评论

Sven
Sven 2011-11-8
Have you used regular expressions before? They can be quite useful.
txt='har23#$';
badChars = regexp(txt,'[^A-Za-z0-9]');
if isempty(badChars)
disp 'All valid characters'
else
fprintf('Bad characters detected: %s\n', txt(badChars))
end

请先登录，再进行评论。

请先登录，再回答此问题。

 采纳的回答

Walter Roberson
Walter Roberson 2011-11-8

0 个投票

txtisalpha = ismember(txt, ['a':'z', 'A':'Z']);
Then txtisalpha will be a vector with true for English letters and false for other characters (including spaces).

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Characters and Strings 的更多信息

产品

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by