From: Harry Kakueki <list.push@...>
Date: 2008-07-17T10:38:12+09:00
Subject: Re: The next number that is not in an array

On Thu, Jul 17, 2008 at 6:01 AM, Tim Conner <crofty_james@hotmail.com> wrote:
> I want to increment the current value of a variable to the next number
> that does not appear in an array of restricted numbers.
> e.g.
> restricted_numbers = [2,3,4,5,8,10,15,29]
>
> if the variable is currently storing 11 then I want to increment it to
> 12,
> however if the variable is currently storing 1 then I want to increment
> it to 6.
>
> How is this done in ruby?
> Thanks in advance
> --
> Posted via http://www.ruby-forum.com/.
>
>

# If your range is not too big, you could try this.
# It is not so efficient, but....

ngnums = [2,3,4,5,8,10,15,29]
mynum = 1

p (0..100_000).select {|x| x > mynum and ngnums.include?(x) == false}[0]

Harry

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