jirenpatel.rb

require 'time'

class AverageTimeFinder
  
  def average_time_of_day(actual_time_str, time_array)
    
    sum = 0 
    check_format(actual_time_str)
    actual_time = Time.parse(actual_time_str) 
    
    if(time_array.kind_of? Array)
      time_array.each do |t|
        check_format(t)
        diff = (Time.parse(t) - actual_time )               
        diff = 24*60*60 + diff  if diff < 0
        sum = sum + diff        
      end            
    else 
      p "Plese give input proper time array"
      exit
    end
    
    (actual_time + (sum/time_array.length)).strftime("%I:%M%p")  
    
  end
  
  private 
  def check_format(time_str)
    if (time_str.downcase.scan(/^\d+:\d+[ap]m/)[0] == nil)        
        p "Enter valid format (i.e 11:01am ,12:05pm, 10:0pm) for ", time_str 
        exit
    end
      
    true
  end
  
end



flight_times = ["12:11am","11:51pm", "11:56pm", "12:01am", "12:06am"]
#flight_times = ["6:41am", "6:51am", "7:01am"]

a = AverageTimeFinder.new
print "Average departure/arrival time = " +   a.average_time_of_day("10:0pm",flight_times) + "\n"