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Full Discussion: Randomize letters
Top Forums Shell Programming and Scripting Randomize letters Post 302658193 by balajesuri on Tuesday 19th of June 2012 02:53:57 AM
Old 06-19-2012
Here's an implementation of Fisher Yates Shuffle algorithm (from perlfaq4):

Code:
#! /usr/bin/perl -w
use strict;

my $string = "hello";
my @x = split '', $string;
fisher_yates_shuffle( \@x );
print @x;

sub fisher_yates_shuffle {
    my $deck = shift;
    return unless @$deck;
    my $i = @$deck;
    while (--$i) {
        my $j = int rand ($i+1);
        @$deck[$i,$j] = @$deck[$j,$i];
    }
}

 

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LEARN ABOUT SUNOS

panel_below

panel_above(3CURSES)					     Curses Library Functions					      panel_above(3CURSES)

NAME

       panel_above, panel_below - panels deck traversal primitives

SYNOPSIS

       cc [ flag ... ] file ... -lpanel -lcurses [ library .. ]
       #include <panel.h>

       PANEL *panel_above(PANEL *panel);

       PANEL *panel_below(PANEL *panel);

DESCRIPTION

       panel_above()  returns  a  pointer to the panel just above panel, or NULL if panel is the top panel. panel_below() returns a pointer to the
       panel just below panel, or NULL if panel is the bottom panel.

       If NULL is passed for panel, panel_above() returns a pointer to the bottom panel in the deck, and panel_below() returns a  pointer  to  the
       top panel in the deck.

RETURN VALUES

       NULL is returned if an error occurs.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       curses(3CURSES), panels(3CURSES), attributes(5)

NOTES

       These routines allow traversal of the deck of currently visible panels.

       The header <panel.h> automatically includes the header <curses.h>.

SunOS 5.10							    31 Dec 1996 					      panel_above(3CURSES)
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