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+<code>
+open (FH, "<woerterbuch.txt");
+@zeilen = <FH>;
+foreach $zeile (@zeilen) {
+  #print "$zeile";
+  #print $_;
+  @worte = split("\;", $zeile);
+  $wort{$worte[0]} = $worte[1];
+  $worteng{$worte[1]} = $worte[0];
+}
+foreach $key (keys %wort) {
+	print "$key $wort{$key}\n";
+}
+while ($eingabe ne "end") {
+  print "Eingabe: ";
+  $eingabe = <STDIN>;
+  chomp ($eingabe);
+  $eingabe = lc($eingabe);
+  if(exists($wort{$eingabe})) {
+    print $wort{$eingabe}."\n";
+  } elsif (exists($worteng{$eingabe})) {
+    print $worteng{$eingabe}."\n";
+  }
+  elsif ($eingabe ne "end") {
+    print "Wort nicht vorhanden\n";
+  }
+}
+</code>
+==== Variante 2 ====
+<code>
+use strict;
+use warnings;
+open (FH, "<woerterbuch.txt");
+## my @lines = <FH>;
+my %de2en;
+my %en2de;
+while (my $line = <FH>) {
+  my @woerter = split(';', $line);
+  # print "$woerter[0] $woerter[1] \n";
+  $de2en{$woerter[0]} = $woerter[1];
+#   $en2de{$woerter[1]} = $woerter[0];
+}
+%en2de = reverse %de2en;
+close FH;
+my $search = $ARGV[0];
+if (exists $de2en{$search}) {
+   printf "Deutsch %s => Englisch %s\n",
+      $search, $de2en{$search};
+} elsif (exists $en2de{$search}) {
+   printf "Englisch %s => Deutsch %s\n",
+      $search, $en2de{$search};
+} else {
+   print "%s nicht gefunden\n", $search;
+}
+</code>

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