Beefy Boxes and Bandwidth Generously Provided by pair Networks
Syntactic Confectionery Delight
 
PerlMonks  

Re^3: How can I get the results in a text file from counting in a string?

by kennethk (Monsignor)
on Aug 07, 2012 at 20:34 UTC ( #986075=note: print w/ replies, xml ) Need Help??


in reply to Re^2: How can I get the results in a text file from counting in a string?
in thread How can I get the results in a text file from counting in a string?

While I certainly think the code could use dramatic algorithmic improvement, I was attempting to keep the logic as consistent as possible, given the OP's apparent level of familiarity. My actual inclination would be to write it as a single pass, stashing results in a hash, so you could separate the processing and the output. Also reduces duplication of code. But to each their own, premature optimization, and all that jazz.

#!/usr/bin/perl use 5.014; # 986041 my $str="BATCATDATEFEAT"; my $output = 'Results.txt'; open(my $fh, '>', $output) or die "Can't open $output, $!"; my %spots; while ($str =~ /([AT])/ig) { push @{$spots{uc $1}}, pos $str; } for my $key (keys %spots) { my $i = 0; for my $pos (@{$spots{$key}}) { $i++; my $text = "\n $key=$i ends at $pos\n"; print $text; print $fh $text; } } =head execution: C:\>type Results.txt A=1 ends at 2 A=2 ends at 5 A=3 ends at 8 A=4 ends at 13 T=1 ends at 3 T=2 ends at 6 T=3 ends at 9 T=4 ends at 14 =cut

#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.


Comment on Re^3: How can I get the results in a text file from counting in a string?
Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://986075]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others drinking their drinks and smoking their pipes about the Monastery: (9)
As of 2014-07-30 12:36 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    My favorite superfluous repetitious redundant duplicative phrase is:









    Results (231 votes), past polls