if string is abc return value

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Jassy
Jassy 2019-4-9
评论： Jassy 2019-4-9
Hi.
I have filename is string and then I want to find specific name.
if filename have ' a ' xxx = 1
if filename have ' b ' xxx = 2
if filename have ' c ' xxx = 3
thank you.
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Adam Danz
Adam Danz 2019-4-9
编辑：Adam Danz 2019-4-9
what if filename has 'a' and 'b' what value does it get?
This question needs to be defined more clearly.
Adam Danz
Adam Danz 2019-4-9
So, it's always the last letter of the filename?

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采纳的回答

Jan
Jan 2019-4-9
Maybe:
[fPath, fName, fExt] = fileparts(filename);
if endsWith(fName, 'a ') % With the space as in your example
xxx = 1;
elseif endsWith(fName, 'b ')
xxx = 2;
... etc
end
Or:
[fPath, fName, fExt] = fileparts(filename);
switch fname(end-1) % Again assuming you mean the 2nd last character
case 'a'
xxx = 1;
case 'b'
xxx = 2
... etc
otherwise
error('Unexpected charatcer')
end
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Jassy
Jassy 2019-4-9
Thank you so much. It saved me
and next time I will give detail more than this.

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更多回答（1 个）

Adam Danz
Adam Danz 2019-4-9
The cell array 'key' lists all possible last-characters and the order determines the value.
filename = 'Z2q0002b.jpg';
[~, fName] = fileparts(filename);
key = {'a' 'b' 'c'};
xxx = find(strcmp(key, fName(end)));
xxx =
2

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