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How to apply brackets?

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# 1  
Old 01-23-2009
How to apply brackets?
Hi,

I have a query term like this:

$query="apple NOT banana AND fruits";

$query="a1 NOT prim1 AND a2 NOT a3 OR a5";

I want to apply brackets to the NOT terms and the output should be like this:

Code:
$query="apple NOT (banana) AND fruits";
$query="a1 NOT (prim1) AND a2 NOT (a3) OR a5";

How can i do this??

Regards
Vanitha
Last edited by vanitham; 01-23-2009 at 07:01 AM..
# 2  
Old 01-23-2009
Try this:

Code:
awk '{for(i=1;i<=NF;i++){if($i=="NOT"){i++;$i="("$i")"}}}1'

Regards
# 3  
Old 01-27-2009
Quote:
Originally Posted by Franklin52
Try this:

Code:
awk '{for(i=1;i<=NF;i++){if($i=="NOT"){i++;$i="("$i")"}}}1'

Regards
Hi,

How can i do that in perl???

Regards
Vanitha
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