Beefy Boxes and Bandwidth Generously Provided by pair Networks
We don't bite newbies here... much

Re: Difficulty in randomization

by kejohm (Hermit)
on Mar 04, 2012 at 21:41 UTC ( #957816=note: print w/replies, xml ) Need Help??

in reply to Difficulty in randomization

Instead of using if in your loop, you can use a do {...} while loop, eg:

my @array; for ( 1 .. 10 ) { my $random_number; do { $random_number = rand 600; } while $array[$random_number] eq 'X'; $array[$random_number] = 'X'; }

Here we generate a random number inside the loop and check whether the element at that position has been assigned 'X'. If it is, we try again. Otherwise, we assign 'X' to the selected element.

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://957816]
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others studying the Monastery: (7)
As of 2017-06-28 14:46 GMT
Find Nodes?
    Voting Booth?
    How many monitors do you use while coding?

    Results (640 votes). Check out past polls.