Submitting challenge048 - my first submission (IanRifkin)

3 files changed, 61 insertions, 0 deletions

diff --git a/challenge-048/ianrifkin/README b/challenge-048/ianrifkin/README
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+Solution by Ian Rifkin.
\ No newline at end of file
diff --git a/challenge-048/ianrifkin/perl/ch-1.pl b/challenge-048/ianrifkin/perl/ch-1.pl
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+++ b/challenge-048/ianrifkin/perl/ch-1.pl
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+#!/usr/bin/perl
+use strict;
+
+# There are 50 people standing in a circle in position 1 to 50. 
+# The person standing at position 1 has a sword. He kills the 
+# next person i.e. standing at position 2 and pass on the sword 
+# to the immediate next i.e. person standing at position 3. Now 
+# the person at position 3 does the same and it goes on until 
+# only one survives.
+
+# Solution by ianrifkin
+
+my $num_people = 50;
+
+#create array of people
+my @people;
+for (1..$num_people) {
+    $people[$_] = $_;
+}
+
+#give first person a sword
+my $curr = shift @people;
+
+while (scalar(@people) > 1) {
+    #current person has sword
+    #move current person to end
+    my $curr = shift @people;
+    push @people, $curr;
+
+    #kill next person
+    my $curr = shift @people;
+
+    next;
+}
+
+
+print "\n***** The lone survivor is @people *****\n\n";
diff --git a/challenge-048/ianrifkin/perl/ch-2.pl b/challenge-048/ianrifkin/perl/ch-2.pl
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+#!/usr/bin/perl
+use strict;
+use Date::Simple;
+
+# Write a script to print all Palindrome Dates between 
+# 2000 and 2999. The format of date is mmddyyyy. For 
+# example, the first one was on October 2, 2001 as it 
+# is represented as 10022001.
+
+# Solution by ianrifkin
+
+# Assumption: between 2000 and 2999 is from Jan 1st 2000 through the last day in 2999.
+
+my $check_date = Date::Simple->new('2000-01-01');
+my $end_date = Date::Simple->new('2999-12-31');
+
+print "\nThe following dates from $check_date to $end_date are palindromes assuming the format mmddyyy:\n";
+while ($check_date <= $end_date) {
+    my $forwards = $check_date->format('%m%d%Y');
+    my $backwards = reverse $forwards;
+    print "$forwards (" . $check_date->format('%m-%d-%Y') . ")\n" if $forwards == $backwards;
+    $check_date++
+}