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Examples for Chapter 3 written in Perl 5 #71

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Merged
merged 3 commits into from
Apr 29, 2018
Merged

Examples for Chapter 3 written in Perl 5 #71

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aea4815
Create 01_countdown.pl
biosta Apr 23, 2018
d549baa
Create 02_greet.pl
biosta Apr 23, 2018
0047c00
Create 03_factorial.pl
biosta Apr 23, 2018
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15 changes: 15 additions & 0 deletions 03_recursion/perl5/01_countdown.pl
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sub countdown {

my $i = shift;

print "$i\n";

# base case:
return if $i <= 1;

# recursive case
countdown( $i - 1 );

}

countdown(5);
23 changes: 23 additions & 0 deletions 03_recursion/perl5/02_greet.pl
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sub greet2 {

my $name = shift;

print "how are you, $name ?\n";
}

sub bye { print "ok bye !\n"; }

sub greet {

my $name = shift;

print "hello, $name !\n";

greet2($name);

print "getting ready to say bye...\n";

bye();
}

greet('adit');
13 changes: 13 additions & 0 deletions 03_recursion/perl5/03_factorial.pl
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sub fact {

my $x = shift;

if ( $x == 1 ) {
return 1;
}
else {
return $x * fact( $x - 1 );
}
}

print fact(5), "\n";