Re: Filling an array from the first occurrence on down

I use what may be considered a cheater's approach to this. I set a pointer to the source and the target, calculate the lengths, and do a memcpy to shift such data. So that if I want to shift elements 1-5 "up", pSrc will point to array(1), pTgt will point to array(2), and len will have the number of bytes to copy (the number of elements * size of each element). Then:

memcpy(pTgt, pSrc, len) ;

Works for compressing out, too. And no silly looping.

"Alan Shore" <ashore@xxxxxxxx> wrote:

Hi everyone
I'm having one of those days where no matter what I do, I just cannot
get my head around what should be a simple problem
Hopefully someone is kind enough to provide an answer
I have an array
D LINE S 30 DIM(6)

Data can be in any combination of the occurrences (or none at all)
I need to create logic so that data is moved down to fill in from the
first, through the second, then third etc., until the only blanks are
in the trailing occurrences

Hopefully I explained it correctly, here is an example
1
2 data 1
3
4
5 data here
6 f=data 2

Becomes
1 data 1
2 data here
3 f=data 2
4
5
6
NOTE - I don't want the information sorted, just moved up
As always, any and all responses gratefully appreciated

Alan Shore
Programmer/Analyst, Direct Response
E:AShore@xxxxxxxx
P:(631) 200-5019
C:(631) 880-8640
"If you're going through Hell, keep going" - Winston Churchill

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