From: Brian Candler <b.candler@...>
Date: 2009-05-05T19:18:03+09:00
Subject: Re: Min max program

Taylor Lodge wrote:
> I've just started using ruby for a programming/math class I'm doing at
> school. Was asked to write a program that finds sum min max and avge of
> a random set of numbers. Have managed to write that program but it is
> overly complicated. What I was wondering is if I can store this
> 
> if
>   max < num1
>   max = num1
> end
> 
> if
>    num1 < min
>   min = num1
> end
> (repeated 8 times)
> 
> code into something that's run once but read the variables from an array
> so I don't have to keep typing it and adding it in if I feel like adding
> more numbers.

Use this as a starting point:

  nums = Array.new(8) { rand(10000) }

Or perhaps you would prefer this:

  nums = []
  8.times { nums << rand(10000) }

Then you can iterate using

  nums.each do |num|
    .. do something with num
  end

You can fold your existing code into that loop, e.g.

  sum += num
  if num < min
    min = num
  end
  if num > max
    max = num
  end

HTH,

Brian.
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