#ProjectEuler/Python/Problem2.py
#Matthew Ellison
# Created: 01-26-19
#Modified: 03-28-19
#The sum of the even Fibonacci numbers less than 4,000,000
#Unless otherwise listed, all of my non-standard imports can be gotten from my pyClasses repository at https://bitbucket.org/Mattrixwv/pyClasses
"""
	Copyright (C) 2019  Matthew Ellison

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU Lesser General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU Lesser General Public License for more details.

	You should have received a copy of the GNU Lesser General Public License
	along with this program.  If not, see <https://www.gnu.org/licenses/>.
"""


from Stopwatch import Stopwatch
from Algorithms import getAllFib

__topNumber = 4000000


def Problem2():
	#Setup your variables
	fibSum = 0	#Holds the sum of the Fibonacci numbers
	fibNums = []	#An array that holds the Fibonacci numbers

	#Get all of the fibonacci numbers
	fibNums = getAllFib(__topNumber - 1)	#Send it - 1 because it is < __topNumber

	#Determine if each number is odd or even
	for num in fibNums:
		#If it is even add it to the running sum 
		if((num % 2) == 0):
			fibSum += num

	#Print the results
	print("The sum of all even Fibonacci numbers less than " + str(__topNumber) + " is " + str(fibSum))


#If you are running this file, automatically start the correct function
if __name__ == '__main__':
	timer = Stopwatch()	#Use to determine the algorithm's run time
	timer.start()	#Start the timer
	Problem2()		#Call the function that answers the question
	timer.stop()	#Stop the timer
	#Print the results of the timer
	print("It took " + timer.getString() + " to run this algorithm")

"""Results:
The sum of all even Fibonacci numbers less than 4000000 is 4613732
It took 27.621 microseconds to run this algorithm
"""