Function RangNonGras(ref As Range, plage As Range)
'plage a une colonne (ou une ligne)
Application.Volatile
If ref.Font.Bold Then RangNonGras = "": Exit Function
Dim a(), i&
Set plage = Intersect(plage, Application.Caller.Parent.UsedRange)
ReDim a(1 To plage.Count)
For i = 1 To UBound(a)
a(i) = IIf(IsNumeric(CStr(plage(i))) And Not plage(i).Font.Bold, plage(i), -1E+99)
Next
tri a, 1, UBound(a)
RangNonGras = Application.Match(ref, a, 0)
End Function
Sub tri(a, gauc, droi) ' Quick sort
Dim ref, g, d, temp
ref = a((gauc + droi) \ 2)
g = gauc: d = droi
Do
Do While a(g) > ref: g = g + 1: Loop
Do While ref > a(d): d = d - 1: Loop
If g <= d Then
temp = a(g): a(g) = a(d): a(d) = temp
g = g + 1: d = d - 1
End If
Loop While g <= d
If g < droi Then Call tri(a, g, droi)
If gauc < d Then Call tri(a, gauc, d)
End Sub