Triangle Problem

gistfile1.rb

#!/usr/bin/ruby

numOfTrials = 10000
numTriangles = 0

numOfTrials.times do
  # generate two random breaks, in order
  breaks = [ rand, rand ].sort

  # load the length calculations via the breaks into an "lengths" array
  # order the lengths
  lengths = [ 
    breaks[0],
    breaks[1] - breaks[0],
    1 - breaks[1]
  ].sort

  # add 1 to triangle var if we have a triangle
  numTriangles += 1 if lengths[2] < lengths[0] + lengths[1]
end

pct = numTriangles.to_f / numOfTrials * 100

puts "Number of Trials: #{numOfTrials}"
puts "Number of Triangles: #{numTriangles}"
puts "Percentage: #{pct}%"