At 6:47 PM +0800 1/13/10, Majian wrote:
Hi,all
There is a problem confused me for a long time .
It is:
cat test.txt
------------------------
1,
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
------------------------
Then I want to this result :
1 2 3 6 9
4 7 10
5 8 11
I don't know how to print the result use the Perl script clearly.
Could someone give me some suggestions?
Here are some snippets to get you started (untested):
1. open the file:
open( my $fh, '<', $filename) or die("Can't open file $filename: $!");
2. Read the lines into an array, one line per element:
my @lines = <$fh>;
3. Remove the newlines and commas from the end of the strings:
chomp(@lines);
s/,$// for @lines;
4. Print the lines in any order according to whatever logic you desire:
print "$_ " for @lines[0,1];
for( my $i = 2; ($i+6) <= $#lines; $i++ ) {
print "$_ " for @lines[$i,$i+3,$i+6];
print "\n";
}
--
Jim Gibson
j...@gibson.org
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