Randomize '纯随机,不重复
Response.write Int((999999999 * Rnd) + 111111111) '生成111111111到999999999之间随机数

<%
'生成的是一个不重复的数组
Function GetRnd(lowerNum,upperNum)
Dim unit,RndNum,Fun_X
unit = upperNum - lowerNum
Redim MyArray(unit)
For Fun_I=0 To unit
myArray(Fun_I)= lowerNum + Fun_I
Next
For Fun_I=0 To round(unit)
RndNum = getRndNumber(Fun_I,unit)
Fun_X = myArray(RndNum)
myArray(RndNum)=myArray(Fun_I)
myArray(Fun_I)=Fun_X
Next
GetRnd = Join(myArray)
End Function
Function getRndNumber(lowerbound,upperbound)
Randomize
getRndNumber=Int((upperbound-lowerbound+1)*Rnd+lowerbound)
End Function
Response.Write GetRnd(1,1000)
%>

<%
function rndarray(istart,iend,sum)
dim arrayid(),i,j,blnre,temp,iloop,eloop
redim arrayid(sum-1)
i=0
iloop=0
eloop=0
blnre=false
randomize
do while i<sum
temp=int(rnd*(iend-istart+1)+istart)
if i=0 then
arrayid(0)=temp
i=i+1
iloop=iloop+1
else
for j=0 to i-1
if arrayid(j)=temp then
blnre=true
iloop=iloop+1
exit for'这一句很重要，防止多余的循环
else
iloop=iloop+1
end if
next
 if blnre=false then
 arrayid(i)=temp
 i=i+1
 else
 blnre=false
 end if
end if
loop
rndarray=join(arrayid)
end function
response.write rndarray(1,5,1) '开始数字,结尾数字,生成多少个
%>