07-09-2007
Counting the number of occurances of all characters (a-z) in a string
Hi,
I am trying out different scripts in PERL. I want to take a line/string as an input from the user and count the number of occurrances of all the alphabets (a..z) in the string. I tried doingit like this :
#! /opt/exp/bin/perl
print "Enter a string or line : ";
$string = <STDIN>;
chop $string;
$string =~ tr/[A-Z]/[a-z]/;
#print @string;
print "\n";
@arr = ('a' .. 'z');
foreach $val (@arr)
{
$count = ($string =~ tr/$val//);
print "$val occurred $count times\n";
}
But looks like I am going wrong somewhere. Please guide me to solve this.
Regards,
Sendhil
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LEARN ABOUT PHP
tidy.getoptdoc
TIDY.GETOPTDOC(3) 1 TIDY.GETOPTDOC(3)
tidy::getOptDoc - Returns the documentation for the given option name
Object oriented style
SYNOPSIS
string tidy::getOptDoc (string $optname)
DESCRIPTION
Procedural style
string tidy_get_opt_doc (tidy $object, string $optname)
tidy_get_opt_doc(3) returns the documentation for the given option name.
Note
You need at least libtidy from 25 April, 2005 for this function be available.
PARAMETERS
o $object
- The Tidy object.
o $optname
- The option name
RETURN VALUES
Returns a string if the option exists and has documentation available, or FALSE otherwise.
EXAMPLES
Example #1
Print all options along with their documentation and default value
<?php
$tidy = new tidy;
$config = $tidy->getConfig();
ksort($config);
foreach ($config as $opt => $val) {
if (!$doc = $tidy->getOptDoc($opt))
$doc = 'no documentation available!';
$val = ($tidy->getOpt($opt) === true) ? 'true' : $val;
$val = ($tidy->getOpt($opt) === false) ? 'false' : $val;
echo "<p><b>$opt</b> (default: '$val')<br />".
"$doc</p><hr />
";
}
?>
SEE ALSO
tidy.getconfig(3), tidy.getopt(3).
PHP Documentation Group TIDY.GETOPTDOC(3)