report z.

CLASS demo DEFINITION.

 PUBLIC SECTION.

   CLASS-METHODS main.

ENDCLASS.

CLASS demo IMPLEMENTATION.

 METHOD main.

   DATA

     itab TYPE STANDARD TABLE OF i

          WITH EMPTY KEY

          WITH NON-UNIQUE SORTED KEY sort_key COMPONENTS table_line.

   itab = VALUE #( ( 2 ) ( 5 ) ( 1 ) ( 3 ) ( 4 ) ).

   DATA(output) =

     REDUCE string(

       INIT o = ``

       FOR  i = lines( itab ) THEN i - 1 WHILE i > 0

       NEXT o = o && COND #( LET r = itab[ KEY sort_key INDEX i ] IN

                             WHEN r > 2 THEN r && ` ` ELSE r ) ).

   cl_demo_output=>display( output ).

 ENDMETHOD.

ENDCLASS.

START-OF-SELECTION.

 demo=>main( ).