Find the last character in an aplhanumreic string

Hi guys first time poster long time hiding in the shadows,
hopefully someone can help me
I have set of username stored and I need to find the last
character before the number for example
abc123 I would want to find c
ab123 I would want to find b
any suggestions as to how I would do this?
Thanks in advance

Here's one way:
<CFSET YourString = "abc123")>
<CFSET LastChar = "">
<CFSET Pos = 1>
<CFSET CharLen = Len(YourString)>
<CFLOOP from="1" to="#CharLen#" step="1">
<CFSET Char = right(left(YourString,Pos),1)>
<CFIF Not IsNumeric(Char)>
<CFSET LastChar = Char>
<CFSET Pos = Pos + 1>
<CFELSE>
<CFBREAK>
<CFIF>
</CFLOOP>

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go
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declare @input datetime
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Find the last character in an aplhanumreic string

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