identifying successive dates in a cell vector
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Dear all
I have the following sequence of dates
A={
'11/08'
'11/08'
'12/08'
'01/09'
'02/09'
'03/09'
'04/09'
'05/09'
'06/09'
'07/09'
'08/09'
'09/09'
'10/09'
'11/09'
'11/09'
'12/09'
'01/10'
'02/10'
}
As you can see some succesive dates contain the same month/year (for example the first 2 dates).
I would like to be able to identify the identical succesive dates
so as to construct an if statetement that will say
for ii=2:length(A)
if A(ii,1)==A(ii-1,1)
'do this'
end
end
采纳的回答
Andrei Bobrov
2012-8-1
编辑：Andrei Bobrov
2012-8-1
[a,b,c] = unique(A);
[jj,jj] = sort(b);
out = accumarray(c,(1:numel(c))',[],@(x){x});
out = [a(jj),out(jj)];
ADD
a = [false all(diff(char(A)-'0')==0,2)'];
a(strfind(a,[0 1])) = true;
or
[c,c,c] = unique(A);
k = [false;diff(c)==0];
k(find(k)-1)=true;
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