solution for challenge 084

2 files changed, 25 insertions, 0 deletions

diff --git a/challenge-084/adam-russell/blog.txt b/challenge-084/adam-russell/blog.txt
new file mode 100644
index 0000000000..d5dd4113f7
--- /dev/null
+++ b/challenge-084/adam-russell/blog.txt
@@ -0,0 +1 @@
+http://www.rabbitfarm.com/cgi-bin/blosxom/2020/11/01#pwc084
diff --git a/challenge-084/adam-russell/perl/ch-1.pl b/challenge-084/adam-russell/perl/ch-1.pl
new file mode 100644
index 0000000000..271bad6883
--- /dev/null
+++ b/challenge-084/adam-russell/perl/ch-1.pl
@@ -0,0 +1,24 @@
+use strict;
+use warnings;
+##
+# You are given an integer $N.
+# Write a script to reverse the given integer and print the result. 
+# Print 0 if the result doesn’t fit in 32-bit signed integer.
+##
+use Config;
+use boolean;
+use constant MAX_32BIT_SIGNED => 2_147_483_647;
+
+sub reverse_digits{
+    my($n) = @_;
+    return 0 if $n > MAX_32BIT_SIGNED || $n < -1*MAX_32BIT_SIGNED;
+    my $negative = $n < 0 ? true : false;
+    $n = abs($n) if $negative;
+    return join("", reverse split(//, $n)) if !$negative;
+    return "-" . join("", reverse split(//, $n));
+}
+
+MAIN:{
+    my $A = $ARGV[0];
+    print reverse_digits($A) . "\n";   
+}
\ No newline at end of file