solution perl ch-1

1 files changed, 50 insertions, 0 deletions

diff --git a/challenge-125/kai-burgdorf/perl/ch-1.pl b/challenge-125/kai-burgdorf/perl/ch-1.pl
new file mode 100755
index 0000000000..bafc62c9a9
--- /dev/null
+++ b/challenge-125/kai-burgdorf/perl/ch-1.pl
@@ -0,0 +1,50 @@
+#!/usr/bin/env perl
+
+use utf8;
+use strict;
+use warnings;
+
+my $N = 5;
+
+if($N == 0) {
+    print "(0, 0, 0)\n";
+    exit(0);
+}
+
+print "Input: \$N = $N\nOutput:\n";
+print "\t-1\n" if(!(n_as_hypotenuse($N) and n_as_cathete($N)));
+
+sub n_as_cathete {
+    my ($a) = @_;
+
+    my $c = 0;
+
+    while ($c**2 - ($c-1)**2 <= $a**2) {
+        for(1..($c-1)) {
+            if($c*$c - $_*$_ == $a*$a) {
+                print "\t($a, $_, $c)\n";
+                return 1;
+            }
+        }
+        $c++;
+    }
+
+    return 0;
+}
+
+
+sub n_as_hypotenuse {
+    my ($c) = @_;
+
+    for(1..($c-1)) {
+        my $a = $_;
+        for($a..($c-1)) {
+            if($a**2 + $_**2 == $c**2) {
+                print "\t($a, $_, $c)\n";
+                return 1;
+            }
+        }
+    }
+
+    return 0;
+}