Perl有着强大的随机数产生函数rand()，下面的代码详细介绍其应用

#!/usr/bin/perl #  use strict;   use warnings; # 0~1之间    $random_number = rand();

  print $random_number . "\n";

#大范围  $range = 100;

   $random_number = rand($range);

  print $random_number . "\n";

#整数  $range = 300;

   $random_number = int(rand($range));

  print $random_number . "\n";

#offset    $range = 300;    $minimum = 1;

   $random_number = int(rand($range)) + $minimum;

  print $random_number . "\n";

# 某范围间的随机整数 25,75 $random = int( rand( $Y-$X+1 ) ) + $X; #起止范围 $random = int( rand(51)) + 25; print "$random\n";

 

#随机密码

@chars = ( "A" .. "Z", "a" .. "z", 0 .. 9, qw(qin yang liu _ ! @ $ % ^ & *) ); $password = join("", @chars[ map { rand @chars } ( 1 .. 8 ) ]); print "\t$password\n";

 

#从数组生成随机密码

@array=qw,323 dd ddae oiljef 43,; $elt = $array[ rand @array ]; print "$elt\n"; $elt = $array[ int( rand(0+@array) ) ]; print "$elt\n";

 

#随机密码，任意长度

sub randomPassword { my $password; my $_rand;

my $password_length = $_[0];     if (!$password_length) {         $password_length = 10;     }

my @chars = split(" ",     "a b c d e f g h i j k l m n o     p q r s t u v w x y z - _ % # |     0 1 2 3 4 5 6 7 8 9 秦");

srand;

for (my $i=0; $i <= $password_length ;$i++) {     $_rand = int(rand 41);     $password .= $chars[$_rand]; } return $password; }

 

#产生六位数的随机密码  my $password = randomPassword(6);  # with 60 length  print "password = ", randomPassword(60);