class Array

# File lib/kibo/kibo_native.rb, line 2
def binsearch(element)
  higher = self.length
  lower = 0
  half = higher / 2
  not_done = true

  return false if !element.is_a? Integer
  return false if self[self.length-1] < element

  while not_done
    if element == self[half]
      not_done = false
    elsif element < self[half]
      higher = half
      half = (half - lower) / 2
    else
      lower = half
      half = (higher + lower) / 2
    end
  end

  true
end