Class: Array

Inherits:
Object
  • Object
show all
Defined in:
lib/ext.rb

Instance Method Summary collapse

Instance Method Details

#avg ⇒ Object 



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# File 'lib/ext.rb', line 61

def avg
  s, n = self.sum_with_number
  return s / n
end

#sum ⇒ Object 



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# File 'lib/ext.rb', line 57

def sum
  s, n = self.sum_with_number
  return s
end

#sum_with_number ⇒ Object 



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# File 'lib/ext.rb', line 66

def sum_with_number
  return nil, 0 if(self.size <= 0)
  s = nil
  n = 0
  self.each do |v|
    next if v.nil?
    if(s==nil)
      s = v
    else
      s += v
    end
    n += 1
  end
  return s, n
end