Any's xHarbour function support it?

[richard-service]

Hi
I have a 123 number
What's function that let me show these
123,132,213,231,312,321

[cnavarro]

Hi
I have a 123 number
What's function that let me show these
123,132,213,231,312,321

Please, test

Code: Select all  Expand view

//----------------------------------------------------------------------------//

// Program: Permutations of string -> number of permutations = factorial len( string )
// Date:    08/02/2010
// Autor:   Cristobal Navarro
//----------------------------------------------------------------------------//

#include "fivewin.ch"

Static cString
Static aString
Static aTmpString

Function Main()

    local x
    aString      := {}
    aTmpString   := {}
    cString      := "ABC"
    SetArray()
    Permutations( 1, Len( cString ) )
    ? Len( aString )
    //AEVal( aString, { | a | a := Val( a ) } )
    XBrowse( aString )          //Add 23/05/2016
Return nil

//----------------------------------------------------------------------------//

Function Permutations( nIni, nLen )

   local x
   if nIni <> nLen
      For x = nIni to nLen
         SwapArray( nIni, x )
         Permutations( nIni + 1, nLen )
         SwapArray( nIni, x )          
      Next x
   else
      AAdd( aString, SetString() )
   endif

Return nil

//----------------------------------------------------------------------------//

Function SwapArray( nIni, nAct )

    local cTemp
    cTemp  := aTmpString[ nIni ]
    aTmpString[ nIni ] := aTmpString[ nAct ]
    aTmpString[ nAct ] := cTemp

Return nil

//----------------------------------------------------------------------------//

Function SetArray()

   local x
   For x = 1 to Len( cString )
       AAdd( aTmpString, Substr( cString, x, 1 ) )
   Next x

Return nil

//----------------------------------------------------------------------------//

Function SetString()

   local x
   local cCad   := ""
   For x = 1 to Len( aTmpString )
      cCad += aTmpString[ x ]
   Next x

Return cCad

//----------------------------------------------------------------------------//

 

[joseluisysturiz]

Buen dia, a eso se le llama PERMUTA...muy utilizado en los sistemas de loteria, habia hecho una hace bastante tiempo en la universidad como proyecto, pero ya ni recordaba como lo hice, gracias NAVARRO por tenerla publica, saludos...

[richard-service]

Hi
Now, it's work.