From: Julian Leviston <julian@...>
Date: 2009-05-05T18:50:58+09:00
Subject: Re: Min max program

# define average
class Array
def avg
return self.inject{|num, sum| sum + num} / self.size
end
# random numbers - 8 here
array = (1..8).map{|num| rand(10000)}
# print min max and average
puts "Min:" + array.min.to_s + " Max:" + array.max.to_s + " Avg:" +  
array.avg.to_s

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On 05/05/2009, at 7:24 PM, Taylor Lodge <ubermouse@live.com> 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.
> If I haven't explained myself that well I'll clarify if you need it.
>
> Thanks
>
>
> Here's the full code
>
> num1 = rand(10000)
> num2 = rand(10000)
> num3 = rand(10000)
> num4 = rand(10000)
> num5 = rand(10000)
> num6 = rand(10000)
> num7 = rand(10000)
> num8 = rand(10000)
> max = 0
> min = 10001
>
> puts num1
> puts num2
> puts num3
> puts num4
> puts num5
> puts num6
> puts num7
> puts num8
>
> if
>  max < num1
>  max = num1
> end
> if
>  max < num2
>  max = num2
> end
> if
>  max < num3
>  max = num3
> end
> if
>  max < num4
>  max = num4
> end
> if
>  max < num5
>  max = num5
> end
> if
>  max < num6
>  max = num6
> end
> if
>  max < num7
>  max = num7
> end
> if
>  max < num8
>  max = num8
> end
>
> if
>   num1 < min
>  min = num1
> end
> if
>  num2 < min
>  min = num2
> end
> if
>  num3 < min
>  min = num3
> end
> if
>  num4 < min
>  min = num4
> end
> if
>   num5 < min
>  min = num5
> end
> if
>  num6 < min
>  min = num6
> end
> if
>  num7 < min
>  min = num7
> end
> if
>  num8 < min
>  min = num8
> end
> sum = num1 + num2 + num3 + num4 + num5 + num6 + num7 + num8
> avge = sum / 8s
> puts
> puts 'sum = ' + sum.to_s + '.'
> puts
> puts 'max = ' + max.to_s + '.'
> puts
> puts 'min = ' + min.to_s + '.'
> puts
> puts 'Average = ' + avge.to_s + '.'
> puts
> $end
>
> Attachments:
> http://www.ruby-forum.com/attachment/3654/Sum_max_min_avge.rb
>
> -- 
> Posted via http://www.ruby-forum.com/.
>