XProfan

WindowTitle "NONREKURSIVES FLOATWERTE-QUICKSORT"
Declare NumMax&,A![],Stack1&[],Stack2&[],StackPtr&,HeadPtr&
Declare TailPtr&,Pivot!,a&,b&,t!,q&,r&,p&,s&,i&,ms1&,sec!: J0:
Cls:Print "Wieviele Random Numbers? ";:Input NumMax&
Randomize:i&=0:While i&<NumMax&:A![i&]=Rnd()*100000:Inc i&:EndWhile
ms1& = &GetTickCount:StackPtr&=0:HeadPtr&=0:TailPtr&=NumMax&-1
Print "Starte Nonrekursives Quicksort...";: J2:

While HeadPtr& < TailPtr&:Pivot!=A![(HeadPtr&+TailPtr&)/2]

    a&=HeadPtr&:b&=TailPtr&: J1:

    While A![a&]<Pivot!:inc a&:EndWhile

        While A![b&]>Pivot!:dec b&:EndWhile

            If a&<b&:t!=A![a&]:A![a&]=A![b&]:A![b&]=t!:inc a&:dec b&:Goto "J1"

                EndIf :If a&=b&:q&=b&-1:r&=a&+1: Else :q&=b&:r&=a&:EndIf
                inc StackPtr&:p&=HeadPtr&:s&=TailPtr&

                If (q&-p&)<(s&-r&):Stack1&[StackPtr&]=r&:Stack2&[StackPtr&]=s&

                    HeadPtr&=p&:TailPtr&=q&:Else :Stack1&[StackPtr&]=p&
                    Stack2&[StackPtr&]=q&:HeadPtr&=r&:TailPtr&=s&:EndIf :EndWhile

                    If StackPtr&>0:HeadPtr&=Stack1&[StackPtr&]:TailPtr&=Stack2&[StackPtr&]

                        dec StackPtr&:Goto "J2":EndIf :sec!=(&GetTickCount-ms1&)/1000:print
                        Print "Kontrollausgabe (jedes " + str$(int(NumMax&/30+1))+". Element):"

                        WhileLoop 0,NumMax&-1,int(1+NumMax&/30):Print A![&Loop];:EndWhile :print

                            print:print "Sort-Dauer per "+str$(NumMax&)+" Variablen: "+\
                            str$(sec!)+" Sek.":print:print "Taste...":WaitInput :Goto "J0"