From: William James <w_a_x_man@...>
Date: 2008-10-18T21:39:21+09:00
Subject: Re: Counting

Tom Clarke wrote:

> How would i go about making Ruby count to say 1000 usin only multiples
> of say 2 and 6. Then i am looking to add all of the outputted numbers.
> Can anyone help

"We don't need no stinkin' loops!"

(1..1000).select{|n| 0 == n % 10 }
    ==>
[10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140,
150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270,
280, 290, 300, 310, 320, 330, 340, 350, 360, 370, 380, 390, 400,
410, 420, 430, 440, 450, 460, 470, 480, 490, 500, 510, 520, 530,
540, 550, 560, 570, 580, 590, 600, 610, 620, 630, 640, 650, 660,
670, 680, 690, 700, 710, 720, 730, 740, 750, 760, 770, 780, 790,
800, 810, 820, 830, 840, 850, 860, 870, 880, 890, 900, 910, 920,
930, 940, 950, 960, 970, 980, 990, 1000]

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