Changed problems to work with a driver function

Problems/Problem20.py

@@ -0,0 +1,102 @@
+#ProjectEuler/Python/Problem20.py
+#Matthew Ellison
+# Created: 03-14-19
+#Modified: 07-19-20
+#What is the sum of the digits of 100!
+#Unless otherwise listed, all of my non-standard imports can be gotten from my pyClasses repository at https://bitbucket.org/Mattrixwv/pyClasses
+"""
+	Copyright (C) 2020  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 Problems.Problem import Problem
+from Stopwatch import Stopwatch
+from Unsolved import Unsolved
+
+
+class Problem20(Problem):
+	#Variables
+	__top_num = 100	#The number that you are trying to find the factorial of
+
+	#Functions
+	#Constructor
+	def __init__(self):
+		super().__init__("What is the sum of the digits of 100!?")
+		self.num = 1	#Holds the number 100!
+		self.sum = 0	#The sum of the digts of num
+
+	#Operational functions
+	#Solve the problem
+	def solve(self):
+		#If the problem has already been solved do nothing and end the function
+		if(self.solved):
+			return
+
+		#Start the timer
+		self.timer.start()
+
+		#Run through every number from 1 to 100 and multiply it by the current num to get 100!
+		for cnt in range(1, self.__top_num + 1):
+			self.num *= cnt
+
+		#Get a string of the number because it is easier to pull appart the individual charaters for the sum
+		numString = str(self.num)
+		#Run through every character in the string, convert it back to an integer and add it to the running sum
+		for char in numString:
+			self.sum += int(char)
+
+		#Stop the timer
+		self.timer.stop()
+
+		#Save the results
+		self.result = "100! = " + numString + "\nThe sum of the digits is: " + str(self.sum)
+
+		#Throw a flag to show the problem is solved
+		self.solved = True
+	#Reset the problem so it can be run again
+	def reset(self):
+		super().reset()
+		self.num = 1
+		self.sum = 0
+
+	#Gets
+	#Returns the number 100!
+	def getNumber(self) -> int:
+		#If the problem hasn't been solved throw an exception
+		if(not self.solved):
+			raise Unsolved("You must solve the problem before you can get the number")
+		return self.num
+	#Returns the sum of the digits of 100!
+	def getSum(self) -> int:
+		#If the problem hasn't been solved throw an exception
+		if(not self.solved):
+			raise Unsolved("You must solve the problem before you can get the sum")
+		return self.sum
+
+#This starts the correct function if called directly
+if __name__ == "__main__":
+	problem = Problem20()
+	print(problem.getDescription())	#Print the description of the problem
+	problem.solve()	#Solve the problem
+	#Print the results
+	print(problem.getResult())
+	print("It took " + problem.getTime() + " to solve this algorithm")
+
+""" Results:
+100! = 93326215443944152681699238856266700490715968264381621468592963895217599993229915608941463976156518286253697920827223758251185210916864000000000000000000000000
+The sum of the digits is: 648
+It took 99.670 microseconds to run this algorithm
+"""