From c21c42264b9e202cde1fde5f040f6df023c4ea4b Mon Sep 17 00:00:00 2001
From: lakpatashi <lakpatashi@gmail.com>
Date: Wed, 14 Apr 2021 16:18:28 +0530
Subject: Finished challenge-004 with perl

---
 challenge-004/lakpatashi/README         |  1 +
 challenge-004/lakpatashi/perl/ch-1.pl   | 10 +++++++
 challenge-004/lakpatashi/perl/ch-2.pl   | 46 +++++++++++++++++++++++++++++++++
 challenge-004/lakpatashi/perl/inputFile | 10 +++++++
 4 files changed, 67 insertions(+)
 create mode 100644 challenge-004/lakpatashi/README
 create mode 100755 challenge-004/lakpatashi/perl/ch-1.pl
 create mode 100755 challenge-004/lakpatashi/perl/ch-2.pl
 create mode 100644 challenge-004/lakpatashi/perl/inputFile

diff --git a/challenge-004/lakpatashi/README b/challenge-004/lakpatashi/README
new file mode 100644
index 0000000000..bc153bd576
--- /dev/null
+++ b/challenge-004/lakpatashi/README
@@ -0,0 +1 @@
+Solution by lakpatashi
diff --git a/challenge-004/lakpatashi/perl/ch-1.pl b/challenge-004/lakpatashi/perl/ch-1.pl
new file mode 100755
index 0000000000..ad95a4a7e9
--- /dev/null
+++ b/challenge-004/lakpatashi/perl/ch-1.pl
@@ -0,0 +1,10 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+# PART 1
+use Math::BigFloat qw(bpi);
+my $size = -s $0;
+print "Script size:: $size\n";
+print"PI value:: ", bpi($size),"\n" ;
diff --git a/challenge-004/lakpatashi/perl/ch-2.pl b/challenge-004/lakpatashi/perl/ch-2.pl
new file mode 100755
index 0000000000..e9c43aa4cb
--- /dev/null
+++ b/challenge-004/lakpatashi/perl/ch-2.pl
@@ -0,0 +1,46 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+#	PART 2
+use Data::Dumper;
+my $letterSet = "arefileYOu";			#letter set to be matched to
+print "Given letter Set:: $letterSet\n";
+$letterSet = lc $letterSet;
+my %letterFreq = buildFreq($letterSet);
+#print Dumper(\%letterFreq);
+
+open(FH,'<','inputFile') or die($!);	# file containing list of words
+while(my $word = <FH>){
+	chomp $word;
+	$word = lc $word;
+	my $status = wordMatch(\%letterFreq,$word)? "matched":"not matched";
+	print "$word ==> $status\n"
+}
+
+sub wordMatch{
+	# arg : <hash> <string>
+	my %letterFreq = %{$_[0]};
+	my $word = $_[1];
+	my %wordFreq = buildFreq($word);
+	#print Dumper(\%wordFreq);
+	
+	for my $key (keys %wordFreq){
+		unless( exists $letterFreq{$key} and $wordFreq{$key} <= $letterFreq{$key} ){
+			return 0;
+		}
+	}
+	return 1;
+}
+
+
+
+sub buildFreq{	#given a string returns letter freq. hash
+	my $var = shift;
+	my %freq;
+	for my $key (split //, $var){
+		$freq{$key}++;
+	}
+	return %freq;
+}
diff --git a/challenge-004/lakpatashi/perl/inputFile b/challenge-004/lakpatashi/perl/inputFile
new file mode 100644
index 0000000000..90bdc5cf56
--- /dev/null
+++ b/challenge-004/lakpatashi/perl/inputFile
@@ -0,0 +1,10 @@
+You
+are
+given
+a
+file
+containing
+a
+list
+of
+words
-- 
cgit