From: myemail@... (andrea)
Date: 2009-06-09T00:10:09+09:00
Subject: Re: How to sort array ascending, except zero ?

Robert Klemme <shortcutter@googlemail.com> wrote:

> Another good alternative is to use the block form of #sort:
> 
> irb(main):023:0> a.sort do |x,y|
> irb(main):024:1*   case
> irb(main):025:2*   when x == 0 then  1
> irb(main):026:2>   when y == 0 then -1
> irb(main):027:2>   else             x <=> y
> irb(main):028:2>   end
> irb(main):029:1> end
> => [1, 2, 4, 8, 9, 0]

isn't this simplified version fine too?

irb(main):003:0> a=[0,3,2,-5,0,4]
=> [0, 3, 2, -5, 0, 4]
irb(main):004:0> a.sort{|x,y| x.zero? ? 1 : x<=>y}
=> [-5, 2, 3, 4, 0, 0]

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