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dskorren
Novice
Joined: 07 Feb 2002
Posts: 48
Location: Philippines
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 Posted: Sat Nov 16, 2002 12:15 pm
reverse string
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can somebody help me in making a string reversal alias? tried but failed miserably. thanks
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LightBulb
MASTER
Joined: 28 Nov 2000
Posts: 4817
Location: USA
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Posted: Sat Nov 16, 2002 2:11 pm
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#VAR reverse {};#LOOP 1,%len(@string) {#VAR reverse {@{reverse}%copy({@string}, %len(@string) + 1 - %i, 1)}}
I don't expect this to handle special characters.
LightBulb
Senior Member |
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dskorren
Novice
Joined: 07 Feb 2002
Posts: 48
Location: Philippines
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Posted: Sun Nov 17, 2002 12:24 pm
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Thank you again LightBulb, if you have time can you explain a bit since i really am lost on that alias you made. If i understood it then i would be able to handle other string manipulations. 
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LightBulb
MASTER
Joined: 28 Nov 2000
Posts: 4817
Location: USA
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Posted: Sun Nov 17, 2002 1:02 pm
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I didn't make an alias, there's no #AL anywhere in it. It's just a routine. Here's an alias
#AL {#VAR reverse {};#LOOP 1,%len(%-1) {#VAR reverse {@{reverse}%copy({%-1}, %len(%-1) + 1 - %i, 1)}}}
As for understanding it, it's pretty obvious. Create an empty variable. Put the last character of the string in it. Add the next-to-last character. Add the character before that. And then the one before that, and so forth until all the characters have been added.
LightBulb
Senior Member |
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Evangelist
Adept
Joined: 10 Oct 2000
Posts: 224
Location: USA
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Posted: Fri Nov 22, 2002 5:56 pm
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This may be a no brainer, but if it's an empty alias, how would you call it?
Evangelist/Pernius
www.phidar.com/phidar.html |
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LightBulb
MASTER
Joined: 28 Nov 2000
Posts: 4817
Location: USA
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Posted: Fri Nov 22, 2002 8:03 pm
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You'd think nobody had ever seen a typo.
#AL AnyNameYouWantToGiveIt {#VAR reverse {};#LOOP 1,%len(%-1) {#VAR reverse {@{reverse}%copy({%-1}, %len(%-1) + 1 - %i, 1)}}}
LightBulb
Senior Member |
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Evangelist
Adept
Joined: 10 Oct 2000
Posts: 224
Location: USA
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Posted: Sat Nov 23, 2002 12:19 am
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Wasn't trying to make fun, but considered using the alias. For some reason I didn't notice that it didn't have a name. You do great work though lightbulb, alot of your solutions have helped me (the ones that havent...well, I wasn't having a problem that needed fixing :) all the others have worked though) Sorry if I came off as a smartass.
Evangelist/Pernius
www.phidar.com/phidar.html |
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