Like everyone says--whenever you need to do a lookup in Perl: Think hashes,
#! perl -slw
use strict;
use Data::Dumper;
my @gene_score = (
[ "gene_name_0", "score_0" ],
[ "gene_name_1", "score_1" ],
# ...
[ "gene_name_400", "score_400" ]
);
my @gene_start_stop_chr = (
[ "gene_name_0", "start_0", "stop_0", "chr_0" ],
[ "gene_name_1", "start_1", "stop_1", "chr_1" ],
# ...
[ "gene_name_400", "start_400", "stop_400", "chr_400" ],
[ "gene_name_30000", "start_30000", "stop_30000", "chr_30000
+" ]
);
## Build a hash from the lookup array
my %gene_start_stop_chr = map{
$_->[ 0 ] => [ @{ $_ }[ 1 .. 3 ] ]
} @gene_start_stop_chr;
## Use it to map the inputs to results
my @results = map{
[
$_->[ 0 ],
$_->[ 1 ],
@{ $gene_start_stop_chr{ $_->[ 0 ] } }
]
} @gene_score;
print Dumper \@results;
__END__
P:\test>377857
$VAR1 = [
[
'gene_name_0',
'score_0',
'start_0',
'stop_0',
'chr_0'
],
[
'gene_name_1',
'score_1',
'start_1',
'stop_1',
'chr_1'
],
[
'gene_name_400',
'score_400',
'start_400',
'stop_400',
'chr_400'
]
];
Examine what is said, not who speaks.
"Efficiency is intelligent laziness." -David Dunham
"Think for yourself!" - Abigail
"Memory, processor, disk in that order on the hardware side. Algorithm, algoritm, algorithm on the code side." - tachyon
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