sort and uniq in perl


 
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# 1  
Old 05-17-2006
sort and uniq in perl

Does anyone have a quick and dirty way of performing a sort and uniq in perl?

How an array with data like:

this is bkupArr[0] BOLADVICE_VN

this is bkupArr[1] MLT6800PROD2A

this is bkupArr[2] MLT6800PROD2A

this is bkupArr[3] BOLADVICE_VN_7YR

this is bkupArr[4] MLT6800PROD2A

I want to sort it and remove duplicates.

This would be simple using sort and uniq from the command line but I would like to accomplish it in perl if it is not to complicated.
# 2  
Old 05-17-2006
system ("sort .....")
# 3  
Old 05-18-2006
That's not complicated, but of course that needs some code.

A hash in perl is good for filtering identical items by using hash keys. Then you can also use sort() to sort the items.

An example:

Code:
@array = ('Apple', 'Orange', 'Apple', 'Banana');
%hashTemp = map { $_ => 1 } @array;
@array_out = sort keys %hashTemp;
# @array_out contains ('Apple', 'Banana', 'Orange')

# 4  
Old 05-18-2006
Cbkihong, thats exactly what I was looking for. Thanks.
# 5  
Old 05-18-2006
Code:
ruby -e 'p %w(apple orange apple banana).uniq.sort'

Output:
Code:
["apple", "banana", "orange"]

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