Perl basics, Perl - rextester

Perl basics

#perl 5.22.1 
print "\n";
print "\n";
print "\n";
@jack = qw/jack and jill went up the hill/;
@twinkle = qw/twinkle twinkle little star/;

print "@jack\n";
print "@twinkle\n";
@rhymes = (@jack,@twinkle);
print "@rhymes\n";

print "\n";
@sea = qw/She sells sea shells on the sea shore/;
@core = (3,2,5,6,7,5,4,3,6,8,7,6);

print "Before : @sea\n";
print "Before : @core\n";
@sea = sort(@sea);
@core = sort(@core);
print "-+-+-+-+-+-+-+-+-+-+-+\n";
print "After : @sea\n";
print "After : @core\n";

print "\n";
@questions = qw/Them that ask no question 
		never told a lie/;
@odds = qw/May the odds be with you/;

$qstring = join(' ',@questions);
$oddstring = join('*',@odds);

print $qstring."\n";
print $oddstring."\n";
print "\n";
$rats = "Rats live on no evil star";
$fox = "A:quick:brown:fox:jumps:over:the:lazy:dog";

@star = split(' ', $rats);
@foxy  = split(':', $fox);

print "$star[4]\n"; 
print "$foxy[3]\n";

print "\n";
@nums = (1..20);
print "Before - @nums\n";

splice(@nums, 10, 3, 21..25); 
print "After - @nums\n";

print "\n";
@days = qw/Mon Tue Wed Thu Fri Sat Sun/;

@weekdays = @days[1,4,0];

print "@weekdays\n";

print "\n";
@circus = qw/Tinker Tailor Soldier Spy/;
print "1. \@circus  = @circus\n";
push(@circus, "Moneypenny");
print "2. \@circus  = @circus\n";
unshift(@circus, "Ilsa Faust");
print "3. \@circus  = @circus\n";
pop(@circus);
print "4. \@circus  = @circus\n";
shift(@circus);
print "5. \@circus  = @circus\n";

print "\n";
@circus = qw/Tinker Tailor Soldier Spy/;

$spies = @circus;
@clowns = @circus;

print "$spies\n";
print "@clowns\n\n";

print "\n";
@var_10 = (1..10);
@var_20 = (10..20);
@var_abc = ("a".."z");

print "@var_10\n";   
print "@var_20\n";   
print "@var_abc\n";

print "\n";
@circus = qw/Tinker
Tailor
Soldier
Spy/;

print "$circus[1] is the mole.\n\n";
print "$circus[3] is the mole.\n\n";
print "$circus[-2] is the mole.\n\n";

print "\n";
$var = "This is string scalar!";
$quote = 'Single quote - $var';
$double = "Double quote - $var";

print $var;
print "\nThis is quote inside quotes: $quote\n";
print "\nHere we go double : $double\n\n";

print "\n";
$mission = "fast";       
$impossible = "furious";
$str = $mission." and ".$impossible;
$num = 5 + 3;                  
$mul = 4 * 5;                   
$mix = $str ."  ". $num;             
print "str = $str\n";
print "num = $num\n";
print "mul = $mul\n";
print "mix = $mix\n";

print "\n";
@rhymes = (1, 2, 'Buckle','my','shoe');
@matrix3 = qw/Everything that has a beginning/;

print $rhymes[2]."\n";
print $matrix3[4]."\n\n";

print "\n";
%data = ('hunt', 2100, 'benji', 54, 'faust', 13);
print "\$data{'hunt'} = $data{'hunt'}\n";
print "\$data{'benji'} = $data{'benji'}\n";
print "\$data{'faust'} = $data{'faust'}\n";

print "\n";
%data = ('hunt',100,'hello',17,'penguin',47);
print "\$data{'hunt'}=$data{'hunt'}\n";

print "\n";
@sports = ("tennis","cricket","golf");
print "\$sports[1]=$sports[1]\n";

print "\n";
$var=5;
print 'single $var';
print "\ndouble $var";

print "\n";
print "\nHello World\n";


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