Array Processing in ABAP

[Former Member]

Hi all,

I am a total newbie in ABAP.

I need to process an array in ABAP.

If it was in .NET C#, it will be like this:

String strArr = new String[5] { "A", "B", "C", "D", "E" };

int index = -1;

for (int i=0; i<strArr.length; i++)

{

if (myData.equals(strArr<i>))

{

index = i;

break;

}

}

Can someone please convert the above code into ABAP?

Urgent. Please help. <REMOVED BY MODERATOR>

THank you.

Edited by: Alvaro Tejada Galindo on Feb 22, 2008 5:37 PM

[Former Member]

Hi,

There is no concept of arrays in ABAP, we use internal tables to hold application data. U can use access internal tables with index.

Read table itab index l_index this is same as u do in case of arrrays a(l_index)

Instead use an Internal table to

populate the values and read them ..

say your Internal table has a field F1 ..

itab-f1 = 10.
append itab.
clear itab.

itab-f1 = 20.
append itab.
clear itab.

itab-f1 = 30.
append itab.
clear itab.

Now internal table has 3 values ...

use loop ... endloop to get the values ..

loop at itab.
write :/ itab-f1.
endloop.

Also you can do this way:

IT IS POSSIBLE TO DECLARE THE ONE -DIMENSIONAL ARRAY IN ABAP BY USING INTERNAL TABLES.

EX.)

DATA: BEGIN OF IT1 OCCURS 10,
VAR1 TYPE I,
END OF IT1.
IT1-VAR1 = 10.
APPEND IT1.
IT1-VAR1 = 20.
APPEND IT1.
IT1-VAR1 = 30.
APPEND IT1.
LOOP AT IT1.
WRITE:/ IT1-VAR1 COLOR 5.
END LOOP.

<REMOVED BY MODERATOR>

Cheers,

Chandra Sekhar.

Edited by: Alvaro Tejada Galindo on Feb 22, 2008 5:38 PM

[Former Member]

the previous post is principally right, but uses a form of internal table (internal table with header line) that is depreciated. as a matter of fact it is even forbidden in an ABAP OO context.

This is the closest you can get to an array:

data: itab type standard table of i, "standard table of integer -> array of integer
        var type i. "variable of type integer

i = 1.
append i to itab.
i = 2.
append i to itab

Now you have the two values in your "array". you have to ways of accessing in a very perfomant way using field symbols.

a) directly by index

data: itab type standard table of i, "standard table of integer -> array of integer
        var type i. "variable of type integer
field-symbols:
        <fs> type i.

read table itab index 1 assigning <fs>.

b) looping at the whole table

data: itab type standard table of i, "standard table of integer -> array of integer
        var type i. "variable of type integer
field-symbols:
        <fs> type i.

loop at table itab assigning <fs>.
  "do something
endloop.