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#!/usr/bin/perl
# Perl Weekly Challenge - 091
# - https://perlweeklychallenge.org/blog/perl-weekly-challenge-091/
#
# Task 2 - Jump Game
#
# Author: Niels 'PerlBoy' van Dijke
use strict;
use warnings;
# Unbuffered STDOUT
$|++;
use Scalar::Util qw(looks_like_number);
@ARGV = (2,123,4,1,2,99,100)
unless (@ARGV);
my (@N) = @ARGV;
die "Please provide a list with integer number (x >= 0)"
if (grep { !looks_like_number($_) or $_ < 0 or $_ != int($_) } @N);
printf "Input: (%s)\n\n", join(',', @N);
# Array for progress printing
my (@S) = map { ' ' x length($_) } @N;
my $i = 0;
while ($i < scalar(@N) - 1 and $N[$i] != 0) {
my $c = ($i + $N[$i] >= scalar(@N) ? '!' : '^');
printLocation($i, $c);
$i += $N[$i];
}
printLocation($i, '^') if ($i == scalar(@N) - 1);
print "\n";
printf "Output: %d\n", ($i == scalar(@N) - 1 ? 1 : 0);
sub printLocation {
my ($i, $c) = @_;
printf "%s\n", join(' ', @N);
printf "%s\n", join(' ',
@S[0 .. $i-1],
$c x length($N[$i]),
@S[$i+1 .. -1]);
}
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