You could run a macro like the following against a selection of paragraphs:
Code:
Sub Demo()
Application.ScreenUpdating = False
Dim Tbl As Table, i As Long
With Selection
Set Tbl = .Range.ConvertToTable
With Tbl
.Columns.Add
For i = 1 To .Rows.Count
.Cell(i, 2).Range.Text = Len(.Cell(i, 1).Range.Text)
Next
.Sort ExcludeHeader:=False, FieldNumber:=2
.Columns(2).Delete
.ConvertToText
End With
End With
Application.ScreenUpdating = True
End Sub