Procedure QuickPartition (Array L(1), left, right, pivotIndex)
     pivotValue = L(pivotIndex)
     Swap L(pivotIndex) , L(right); Move pivot To End
     storeIndex = left
     For i=left To right-1
         If L(i) < pivotValue
             Swap L(storeIndex),L(i)
             storeIndex+1
         EndIf
     Next i
     Swap L(right), L(storeIndex)  ; Move pivot To its final place
     ProcedureReturn storeIndex
 EndProcedure
Procedure QuickSelect(Array L(1), left, right, k)
    Repeat
         If left = right:ProcedureReturn L(left):EndIf
         pivotIndex.i= left; Select pivotIndex between left And right
         pivotIndex= QuickPartition(L(), left, right, pivotIndex)
         If k = pivotIndex
             ProcedureReturn L(k)
         ElseIf k < pivotIndex
             right= pivotIndex - 1
         Else
             left= pivotIndex + 1
         EndIf
    ForEver
EndProcedure
Dim L.i(9)
For i=0 To 9
    Read L(i)
Next i
DataSection
    Data.i 9, 8, 7, 6, 5, 0, 1, 2, 3, 4
EndDataSection
For i=0 To 9
    Debug QuickSelect(L(),0,9,i)
Next i