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Megha Gupta
New User
Joined: 15 Mar 2012
Posts: 5
Location: India
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Hello All,
How to reverse a string for ex: "STUDENTS into STNEDUTS" using DFSORT? |
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enrico-sorichetti
Superior Member
Joined: 14 Mar 2007
Posts: 10873
Location: italy
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pretty boring, but ...
use BUILD/OVERLAY moving byte per byte in reverse order |
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Bill Woodger
Moderator Emeritus
Joined: 09 Mar 2011
Posts: 7309
Location: Inside the Matrix
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You have to code the reverse. It is a rare need, so don't expect any built-in way to do it.
OVERLAY would be more exciting, because you'd need an extra byte.
BUILD creates a new current record, so no extra byte needed.
Examples with Fixed-length records:
| Code: |
| BUILD=(3,1,2,1,1,1) |
Would make ABC into CBA
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| OVERLAY=(3,1,2,1,1,1) |
And bearing in mind the default start position for OVERLAY of 1 (for F, 5 for V) would make ABC into CBC, because by the time it gets to 1,1, that position has already been replaced by 3,1. |
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Pandora-Box
Global Moderator
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Joined: 07 Sep 2006
Posts: 1592
Location: Andromeda Galaxy
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| If you have the cusion of using COBOL (FUNCTION REVERSE ) would be handy... |
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daveporcelan
Active Member
Joined: 01 Dec 2006
Posts: 792
Location: Pennsylvania
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If the data is not too large, you could write a small Rexx exec.
This would help with different length fields and eliminate trailing spaces becoming leading spaces (with a Strip function).
You could run it in batch.
I guess more complete requirements would help (as usual). |
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