The following code fulfils the requirement, should the format of input dates be dd/mm/yyyy or mm/yyyy:
dates= {
'11/2008'
'12/2008'
'1/02/2010'
'2/02/2010'
'12/03/2010'
}
for k=1:length(dates)
% I = find(cell2mat(d(k))=='/');
I = find(dates{k}=='/');
if length(I)==1
d = ['22/' dates{k}];
else
d = dates{k};
end
c=datevec(d,'dd/mm/yyyy');
dates{k} = sprintf('%02d/%02d', c(2), c(1)-2000);
end
dates