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#!/usr/bin/env perl
#===============================================================================
#
# FILE: skript2.pl
#
# USAGE: ./skript2.pl
#
# DESCRIPTION:
#
# OPTIONS: ---
# REQUIREMENTS: ---
# BUGS: ---
# NOTES: ---
# AUTHOR: Stefan Suhren (su), suhren.stefan@fh-swf.de
# ORGANIZATION: FH Südwestfalen, Iserlohn
# VERSION: 1.0
# CREATED: 04.11.2015 12:22:03
# REVISION: ---
#===============================================================================
use strict;
use warnings;
use utf8;
# enforce utf-8 mode
binmode (STDIN, ":encoding(UTF-8)");
binmode (STDOUT, ":encoding(UTF-8)");
binmode (STDERR, ":encoding(UTF-8)");
use open ":encoding(UTF-8)";
my $german_file_name = 'german.lst'; # input file name
open my $germanFile, '<', $german_file_name
or die "$0 : failed to open input file '$german_file_name' : $!\n";
my %german;
while (my $line = <$germanFile>)
{
chomp $line;
$german{uc $line} = uc $line;
}
close $germanFile
or warn "$0 : failed to close input file '$german_file_name' : $!\n";
my $quadratFile_file_name = 'quadrat.dat'; # output file name
open my $quadratFile, '<', $quadratFile_file_name
or die "$0 : failed to open input file '$quadratFile_file_name' : $!\n";
my @loesung;
while (my $line = <$quadratFile>)
{
chomp $line;
if (exists $german{uc $line})
{
push @loesung, uc $line;
}
}
close $quadratFile
or warn "$0 : failed to close output file '$quadratFile_file_name' : $!\n";
# sort array
@loesung = sort @loesung;
# Remove double entries
my @loesung_unique;
push @loesung_unique, $loesung[0];
foreach my $unique (@loesung)
{
if ($unique ne $loesung_unique[$#loesung_unique])
{
push @loesung_unique, $unique;
}
}
my $loesungFile_file_name = 'loesung.dat'; # output file name
open my $loesungFile, '>', $loesungFile_file_name
or die "$0 : failed to open output file '$loesungFile_file_name' : $!\n";
foreach my $field (@loesung_unique)
{
printf $loesungFile "$field\n";
}
close $loesungFile
or warn "$0 : failed to close output file '$loesungFile_file_name' : $!\n";
# Plus one as $# only returns the highest field index
printf "%d unique words were found", $#loesung_unique+1;
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