Re: Is there a way to compare strings without using an array?

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Re^2: Is there a way to compare strings without using an array? by Jeri (Scribe) on Oct 18, 2011 at 19:48 UTC
Actually I'm not sure this will work because my string will look something like this.. `648040620,637132715,649986572 etc.` Levenshtein could take into account some unwanted modifications, such as changing the entire 9 digit number by changing a single digit I need the numbers not to be considered as change-able	[reply] [d/l]
Re^3: Is there a way to compare strings without using an array? by CountZero (Bishop) on Oct 18, 2011 at 20:23 UTC
Wait ... you mean your proteins are not single letters? But actually a 9 digit number like `648040620`? Then the regex solution as mentioned above will not work and I think you better put your data in arrays and use List::Compare to calculate the set intersection and such. CountZero A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James	[reply] [d/l]
Re^4: Is there a way to compare strings without using an array? by Jeri (Scribe) on Oct 18, 2011 at 20:32 UTC
I like the List::Compare. It looks good. I'm just worried about, because my array will be at least 5 million in length. Can you offer me any peace of mind?	[reply]
Re^5: Is there a way to compare strings without using an array? by tj_thompson (Monk) on Oct 18, 2011 at 21:04 UTC
Re^5: Is there a way to compare strings without using an array? by CountZero (Bishop) on Oct 19, 2011 at 16:12 UTC
Re^4: Is there a way to compare strings without using an array? by mrstlee (Beadle) on Oct 19, 2011 at 13:47 UTC
I'm not 100% sure what you want to do here Jeri. The sample below assumes you have a single string composed of 9 character sequences. When the 'for' has run the keys of %uniq will be the unique 9 character sequences. It would take a while and a lot of memory over 5 mill x 9 char sequences! `my $str = join '',(648040620,637132715,649986572,648040620 ); my $proteins_count = length ($str)/9; my %uniq; do { $uniq{$_}++ unless $uniq{$_} } for unpack "(A9)$proteins_count" , $str; print "@{[keys %uniq]}\n";` [download] Prints .. 637132715 648040620 649986572	[reply] [d/l]
Re^4: Is there a way to compare strings without using an array? by Jeri (Scribe) on Oct 20, 2011 at 16:01 UTC
I'm going to give it a shot today. I'll let you know what happens. Thanks.	[reply]
Re^2: Is there a way to compare strings without using an array? by Jeri (Scribe) on Oct 18, 2011 at 19:41 UTC
oooo thanks, this might just be what I need	[reply]


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