From: Christian Bradley <christianbradley@...>
Date: 2009-11-04T03:35:24+09:00
Subject: Re: using .delete_if and reject on elements in an array

One liner...
b=(a=Array.new(200).collect{rand(100)+1}).grep(11..21)

From IRB:

irb(main):046:0> b=(a=Array.new(200).collect{rand(100)+1}).grep(11..21)
=> [14, 21, 15, 12, 18, 15, 12, 17, 20, 21, 19, 19, 14, 21, 17, 15, 18, 
20, 17, 11, 17, 11, 19, 12]
irb(main):047:0> a
=> [90, 76, 14, 84, 66, 37, 77, 92, 46, 24, 79, 46, 87, 90, 21, 90, 59, 
48, 62, 67, 55, 33, 58, 47, 23, 4, 95, 76, 66, 95, 66, 10, 49, 36, 75, 
74, 53, 99, 30, 15, 58, 26, 77, 95, 6, 89, 92, 43, 55, 54, 38, 12, 41, 
18, 6, 15, 12, 9, 58, 36, 17, 40, 8, 42, 68, 26, 71, 2, 3, 92, 20, 46, 
84, 95, 21, 90, 74, 31, 4, 59, 49, 36, 45, 52, 100, 98, 32, 25, 70, 3, 
69, 19, 45, 7, 46, 19, 34, 27, 82, 85, 59, 82, 94, 7, 4, 14, 21, 41, 29, 
88, 26, 42, 83, 33, 27, 42, 61, 72, 17, 66, 66, 73, 68, 96, 15, 5, 6, 
49, 18, 23, 72, 90, 84, 96, 46, 83, 44, 10, 75, 20, 43, 17, 63, 39, 25, 
3, 88, 81, 11, 7, 62, 24, 62, 22, 17, 72, 77, 82, 64, 11, 2, 50, 50, 19, 
40, 10, 93, 52, 4, 66, 23, 70, 3, 62, 44, 83, 38, 76, 53, 97, 48, 12, 
68, 64, 70, 77, 77, 49, 72, 34, 94, 94, 99, 79, 31, 73, 85, 59, 46, 64]
irb(main):048:0> b
=> [14, 21, 15, 12, 18, 15, 12, 17, 20, 21, 19, 19, 14, 21, 17, 15, 18, 
20, 17, 11, 17, 11, 19, 12]
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