how to delete the dot in a string

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like bbc.ed.123.f.txt how to change it to bbced123f.txt

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Andrei Bobrov
Andrei Bobrov 2014-1-21
编辑:Andrei Bobrov 2014-1-21
a = 'bbc.ed.123.f.txt';
regexprep(a,{'\.','txt'},{'','.txt'})
or
[strrep(a(1:end-4),'.',''),'.txt']
  1 个评论
Roger
Roger 2014-1-22
if i also want to replace '-' with '_',and ' 'with '',i should do like this
a=[strrep(a(1:end-4),'.',''),'.txt'];
a=[strrep(a(1:end-4),'-','_'),'.txt'];
a=[strrep(a(1:end-4),' ',''),'.txt'];
is there easy way?

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更多回答(1 个)

ES
ES 2014-1-21
you have to handle the last dot(before file extension) and the other dots separately.
str='bbc.ed.123.f.txt';
idx=strfind(str,'.');
new_str=[strrep(str(1:idx(end)-1),'.',''),str(idx(end):end)];%idx(end) is the position of the last dot!

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