[futurebasic] Re: [FB] Sorting differences - FB4 vs FB2

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From: Robert Purves <listrp@...>
Date: Sat, 1 Nov 2008 14:01:59 +1300
Pierre Zippi wrote:

> Any ideas why this sort never exits the DO : UNTIL gap=0 loop?
>
> CLEAR LOCAL
> DIM 50 sortedStr$(_maxRowCol)     'only use 50 char str
> LOCAL FN AlphaSort
> LONG IF multiSort%=0
> FOR col=0 TO gTotalCol-1       'Re-set to original index%(x) order
> index%(col)=col
> NEXT col
> END IF
> FOR x=0 TO gTotalCol-1         'assign same values to new array
> sortedStr$(x)=COLUMNLABELS$(x)
> NEXT x
> size=gTotalCol-2                    'was size=_numberOfItems-1, but
> didn't sort last entry
> gap=size
> DO
> gap=INT(gap.3)                    'fp divide
> FOR count= 0 TO size-gap     'sort
> theItem=count+gap                 'get the item to sort out
> LONG IF sortedStr$(count+1)>sortedStr$(theItem+1)        ' see if it
> is larger (add 1 cor col label)
> SWAP sortedStr$(count+1),sortedStr$(theItem+1)             'swap if
> true(add 1 cor col label)
> SWAP index%(count),index%(theItem)                              'swap
> index (no 1 for reg index)
> END IF
> NEXT count
> UNTIL gap=0          'loop until
> END FN


gap = int( gap / 1.3 ) 'fp divide

Robert P.