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<%
str="0123tt9str"'å«æ01239æ°åï¼å
¶ä»ä¸ºåæ¯ï¼ä¸é¢ä»£ç å¯ä»¥ææ°åæååºæ¥
for i=1 to len(str)
s=mid(str,i,1)
if asc(s)>=asc(0) and asc(s)<=asc(9) then
l=l&s
end if
next
response.write l
%>