how to delete the dot in a string

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

Answer 1

[Andrei Bobrov]

a = 'bbc.ed.123.f.txt';

regexprep(a,{'\.','txt'},{'','.txt'})

or

[strrep(a(1:end-4),'.',''),'.txt']

[Roger]

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?

Answer 2

[ES]

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!