How to find maximum and minimum value in an array of integers in Perl?

Question

I have an array with values 33, 32, 8, 100.

How can I find the maximum and minimum value in this array?

Do I need to include any special libraries?<

Answer 1

I think List::Util is what you are looking for.

Answer 2

You can use List::Util to do this easily, eg.

use List::Util qw(min max);
my @arr = (33, 32, 8, 100);
print min(@arr)," ", max(@arr), "\n";

Answer 3

You can use Statistics::Lite to compute min,max etc

Answer 4

List::Util's min and max are fine,

use List::Util qw( min max );
my $min = min @numbers;
my $max = max @numbers;

But List::MoreUtils's minmax is more efficient when you need both the min and the max (because it does fewer comparisons).

use List::MoreUtils qw( minmax );
my ($min, $max) = minmax @numbers;

List::Util is part of core, but List::MoreUtils isn't.

Answer 5

Without modules:

#!/usr/bin/perl
use strict;
use warnings;
my @array = sort { $a <=> $b } qw(33 32 8 100);
print "min: $array[0]\n";
print "max: $array[-1]\n";

Answer 6

For numbers:

    my ($min,$max) = (sort {$a <=> $b} @array)[0,-1];

For strings:

    my ($min,$max) = (sort {$a cmp $b} @array)[0,-1];