Understanding Lists adding/removing a value

I'm learning lists and adding/removing. In the below code I create a list , generate a random number - and then want to permanently remove the number from the list:

cardsLST.AddAll(Array As Int(1,2,3,4,5))  'create the list
s = Rnd(1,6)  'generate a random number 1-5
Msgbox(s,"开发者_如何学Go")  'display the randomly generated number
Msgbox(cardsLST,"")   'display the current list members
cardsLST.RemoveAt(s)   'remove the generated value from the list
Msgbox(strtCardsLST,"")   'display the updated list members

I can't make sense of the numbers... for example... If I generate a 1, a 2 is removed from the list. If I generate a 5, I get an out of bounds exception

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List and array indeces are zero based so your list is indexed from 0 to 4.

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cardsLST.AddAll(Array As Int(1,2,3,4,5)) is equivalent to the following:

cardsLST.insertAT(0,"1")   'cardsLST.isert(Index as int, Value as object)
cardsLST.insertAT(1,"2")
cardsLST.insertAT(2,"3")
cardsLST.insertAT(3,"4")
cardsLST.insertAT(4,"5")

You can use your random generator to generate index value of the card with s = Rnd(0,5) to generate a random number 0-4 so

cardsLST.RemoveAt(3)

would remove card "4"