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Sort Generate Reverse Keys Function
Array Sorts Class

Public Function SortGenerateReverseKeys( _
      ByRef rRevs() As Variant _
    , ByRef vKeys() As Variant _
    , Optional ByVal vLower As Variant _
    , Optional ByVal vUpper As Variant _
    ) As Boolean

Assuming Keys(1) = 2, Keys(2) = 3, Keys(3) = 1, creates an array of backward pointers such that Revs(1) = 3, Revs(2) = 1, Revs(3) = 2. Assumes that values within vKeys(Lower..Upper) are within the range Lower..Upper.

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