From 057fbcf38dafa21dd08e538a8085b1f09fda4f79 Mon Sep 17 00:00:00 2001
From: "Jaldhar H. Vyas" <jaldhar@braincells.com>
Date: Wed, 17 Feb 2021 16:47:00 -0500
Subject: Challenge 92 by Jaldhar H. Vyas

---
 challenge-092/jaldhar-h-vyas/blog.txt       |  1 +
 challenge-092/jaldhar-h-vyas/perl/ch-1.pl   | 53 +++++++++++++++++++++++++++++
 challenge-092/jaldhar-h-vyas/perl/ch-2.pl   | 45 ++++++++++++++++++++++++
 challenge-092/jaldhar-h-vyas/raku/ch-1.raku | 34 ++++++++++++++++++
 challenge-092/jaldhar-h-vyas/raku/ch-2.raku | 32 +++++++++++++++++
 5 files changed, 165 insertions(+)
 create mode 100644 challenge-092/jaldhar-h-vyas/blog.txt
 create mode 100755 challenge-092/jaldhar-h-vyas/perl/ch-1.pl
 create mode 100755 challenge-092/jaldhar-h-vyas/perl/ch-2.pl
 create mode 100755 challenge-092/jaldhar-h-vyas/raku/ch-1.raku
 create mode 100755 challenge-092/jaldhar-h-vyas/raku/ch-2.raku

diff --git a/challenge-092/jaldhar-h-vyas/blog.txt b/challenge-092/jaldhar-h-vyas/blog.txt
new file mode 100644
index 0000000000..bd2b694bdc
--- /dev/null
+++ b/challenge-092/jaldhar-h-vyas/blog.txt
@@ -0,0 +1 @@
+https://www.braincells.com/perl/2021/02/perl_weekly_challenge_week_92.html
diff --git a/challenge-092/jaldhar-h-vyas/perl/ch-1.pl b/challenge-092/jaldhar-h-vyas/perl/ch-1.pl
new file mode 100755
index 0000000000..0d79b4e8a7
--- /dev/null
+++ b/challenge-092/jaldhar-h-vyas/perl/ch-1.pl
@@ -0,0 +1,53 @@
+#!/usr/bin/perl
+use 5.020;
+use warnings;
+use English qw/ -no_match_vars /;
+
+sub usage {
+    print<<"-USAGE-";
+  $PROGRAM_NAME <A> <B>
+  
+    <A>    a string
+    <B>    another string
+-USAGE-
+    exit 0;
+}
+
+sub isIsomorphic {
+    my ($A, $B) = @_;
+
+    if (length $A != length $B) {
+        return undef;
+    }
+
+    my @A = split //, $A;
+    my @B = split //, $B;
+    my %seen;
+    my %isomorphs;
+
+    for my $i (0 .. scalar @A - 1) {
+        my $a = $A[$i];
+        my $b = $B[$i];
+
+        if (exists $isomorphs{$a}) {
+            unless ($b eq $isomorphs{$a}) {
+                return undef;
+            }
+        } else {
+            if (!grep /$b/, keys %seen) {
+                $isomorphs{$a} = $b;
+                $seen{$b} = 1;
+            } else {
+                return undef;
+            }
+        }
+    }
+
+    return 1;
+}
+
+if (scalar @ARGV != 2) {
+    usage;
+}
+
+say isIsomorphic($ARGV[0], $ARGV[1]) ? 1 : 0;
diff --git a/challenge-092/jaldhar-h-vyas/perl/ch-2.pl b/challenge-092/jaldhar-h-vyas/perl/ch-2.pl
new file mode 100755
index 0000000000..e1f8940cc1
--- /dev/null
+++ b/challenge-092/jaldhar-h-vyas/perl/ch-2.pl
@@ -0,0 +1,45 @@
+#!/usr/bin/perl
+use 5.020;
+use warnings;
+use English qw/ -no_match_vars /;
+
+sub usage {
+    print<<"-USAGE-";
+  $PROGRAM_NAME [<S> ...]
+
+    [<S> ...]    A set of sorted non-overlapping intervals enclosed in
+                 parentheses and separated by commas. The last pair will
+                 be merged into the rest.
+-USAGE-
+    exit 0;
+}
+
+sub toArray {
+    my ($arg) = @_;
+    $arg =~ /\( (\d+) , (\d+) \) /gmx;
+    return [$1, $2];
+}
+
+if (scalar @ARGV < 2) {
+    usage;
+}
+
+my @intervals = sort { $a->[0] <=> $b->[0] } map { toArray($_); } @ARGV;
+
+my $size = scalar @intervals;
+my @merged;
+
+for (my $i = 0; $i < $size; $i++) {
+    my $start = $intervals[$i]->[0];
+    my $end = $intervals[$i]->[1];
+
+    while ($i < $size - 1 &&
+    $end >= $intervals[$i + 1]->[0] && $end <= $intervals[$i + 1]->[1]) {
+        $end = $intervals[$i + 1]->[1];
+        $i++;
+    }
+
+    push @merged, [$start, $end];
+}
+
+say join ', ', map { "($_->[0],$_->[1])" } @merged;
\ No newline at end of file
diff --git a/challenge-092/jaldhar-h-vyas/raku/ch-1.raku b/challenge-092/jaldhar-h-vyas/raku/ch-1.raku
new file mode 100755
index 0000000000..58808310a6
--- /dev/null
+++ b/challenge-092/jaldhar-h-vyas/raku/ch-1.raku
@@ -0,0 +1,34 @@
+#!/usr/bin/raku
+
+sub isIsomorphic(Str $A, Str $B) {
+    my SetHash of Str $seen;
+    my %isomorphs;
+
+    if ($A.chars != $B.chars) {
+        return False;
+    }
+
+    for  $A.comb Z $B.comb -> ($a, $b) {
+        if %isomorphs{$a}:exists {
+            unless $b eq %isomorphs{$a} {
+                return False;
+            }
+        } else {
+            if $b ∉ $seen {
+                %isomorphs{$a} = $b;
+                $seen{$b}++;
+            } else {
+                return False;
+            }
+        }
+    }
+
+    return True;
+}
+
+sub MAIN(
+    Str $A, #= a string
+    Str $B  #= another string
+ ) {
+    say isIsomorphic($A, $B) ?? 1 !! 0;
+}
\ No newline at end of file
diff --git a/challenge-092/jaldhar-h-vyas/raku/ch-2.raku b/challenge-092/jaldhar-h-vyas/raku/ch-2.raku
new file mode 100755
index 0000000000..c00dad0973
--- /dev/null
+++ b/challenge-092/jaldhar-h-vyas/raku/ch-2.raku
@@ -0,0 +1,32 @@
+#!/usr/bin/raku
+
+sub toArray(Str $arg) {
+    $arg ~~ m/ \( (\d+) \, (\d+) \) /;
+    return [$0.Int, $1.Int];
+}
+
+sub MAIN(
+    *@S #= A set of sorted non-overlapping intervals enclosed in
+        #= parentheses and separated by commas. The last pair will
+        #= be merged into the rest.
+    where { @S.elems > 1 }
+) {
+    my @intervals = @S.map( { toArray($_) } ).sort({@^a[0] <=> @^b[0]});
+
+    my $size = @intervals.elems;
+    my @merged;
+
+    loop (my $i = 0; $i < $size; $i++) {
+        my $start = @intervals[$i][0];
+        my $end = @intervals[$i][1];
+
+        while $i < $size - 1 && $end ~~ @intervals[$i + 1].minmax {
+            $end = @intervals[$i + 1][1];
+            $i++;
+        }
+
+        push @merged, [$start, $end];
+    }
+
+    @merged.map({ "[$_[0],$_[1]]"; }).join(q{, }).say;
+}
\ No newline at end of file
-- 
cgit