Re: sort array with two columns

You'd still be better off learning qsort. What are you going to do if you want to sort first name, lastname? Or add middle name to the mix or some other field in the DS array.

On Dec 4, 2019, at 2:05 AM, Booth Martin <booth@xxxxxxxxxxxx> wrote:

I just discovered that. It also needs the (*).keyField.

dcl-ds dataAR dim(100) qualified;
LastName char(25);
FirstName char(25);
end-ds;

sorta %subArr(dataAR(*).LastName: 1: dataARSize); or
sorta(d) %subArr(dataAR(*).LastName: 1: dataARSize); or
sorta %subArr(dataAR(*).FirstName: 1: dataARSize); or
sorta(d) %subArr(dataAR(*).FirstName: 1: dataARSize);

dataARSize, in this case, would be 15.

All seems well so far. Got my fingers crossed.


On 12/3/2019 10:21 PM, Birgitta Hauser wrote:

You can create a Data Structure as follows:

DCL-DS YourDS Qualified;
ArrFirstLast Dim(100)
ArrFirstName VarChar(25)
ArrLastName VarChar(25)

Now you can use %SubArr and Sort ArrFirstName or ArrLastName in Ascending or
Descending sequence


Mit freundlichen Grüßen / Best regards

Birgitta Hauser

"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)
"If you think education is expensive, try ignorance." (Derek Bok)
"What is worse than training your staff and losing them? Not training them
and keeping them!"
„Train people well enough so they can leave, treat them well enough so they
don't want to.“ (Richard Branson)


-----Original Message-----
From: RPG400-L <rpg400-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Jon Paris
Sent: Mittwoch, 4. Dezember 2019 02:29
To: RPG programming on IBM i <rpg400-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: sort array with two columns

SortA can't do it unless the two fields are a) contiguous in the DS and B)
In the "right" order which would normally in this case be Last name followed
by first name.

The real answer is to use qsort() - there are several examples one the web
including in the original RPG "Sorcerers" redbook if you can find a copy.

If not just holler and I'll post one.

On Dec 3, 2019, at 4:20 PM, Booth Martin <booth@xxxxxxxxxxxx> wrote:

This has to be easier than I am making it.

Lets say I have field FirstName and field LastName with, say, 15 rows out

of an array size of 100.

I want users to be able to sort by:

* FirstName (A)
* FirstName (D)
* LastName (A)
* LastName (D)

I can do that with sorta %subArr(field: 1: 15) and sorta(d) %subArr(field:

1: 15).

However getting the complete first & last name to sort together is

convoluted, so my guess is I am missing something simple.

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