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#!/usr/bin/perl
# Perl Weekly Challenge - 092
# - https://perlweeklychallenge.org/blog/perl-weekly-challenge-092/
#
# Task 1 - Isomorphic Strings
#
# Author: Niels 'PerlBoy' van Dijke
use v5.16;
use strict;
use warnings;
use Data::Printer;
# Unbuffered STDOUT
$|++;
@ARGV = ('abc','zyx')
unless @ARGV;
my ($A,$B) = @ARGV;
die "Please provide two strings equal length strings"
unless (defined $A and defined $B and length($A) == length($B));
printf "Input: ('%s','%s')\n", $A, $B;
printf "Output: %d\n", isIsomorphicString($A,$B);
sub isIsomorphicString {
my ($a,$b) = @_;
my @a = split(//, $a);
my @b = split(//, $b);
my %m;
my $r = 1;
foreach my $a (@a) {
my $c = shift(@b);
$m{$a} //= $c;
if ($m{$a} ne $c) {
$r = 0; last;
}
}
return $r;
}
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