Updated to fix a few small bugs

Algorithms.py

@@ -3,11 +3,27 @@
 # Created: 01-27-19
 #Modified: 02-09-19
 #This is a file that contains a few algorithms that I have used several times
+"""
+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/>.
+"""
 
 import math
 
 #This function returns a list with all the prime numbers <= goalNumber
-def getPrimes(goalNumber: int):
+def getPrimes(goalNumber: int) -> list:
 	primes = []
 	foundFactor = False
 
@@ -44,7 +60,7 @@ def getPrimes(goalNumber: int):
 	return primes
 
 #This function gets a certain number of primes
-def getNumPrimes(numberOfPrimes: int):
+def getNumPrimes(numberOfPrimes: int) -> list:
 	primes = []
 	foundFactor = False
 
@@ -87,10 +103,9 @@ def getNumPrimes(numberOfPrimes: int):
 
 	#Return the list with all the prime numbers
 	return primes
-	
 
 #This is a function that returns all the factors of goalNumber
-def getFactors(goalNumber: int):
+def getFactors(goalNumber: int) -> list:
 	#You need to get all the primes up to this number
 	primes = getPrimes(math.ceil(math.sqrt(goalNumber)))	#If there is a prime it must be <= sqrt(num)
 	factors = []
@@ -189,6 +204,10 @@ def getAllFib(goalNumber: int) -> list:
 
 #This function returns the product of all elements in the list
 def prod(nums: list) -> int:
+	#If a blank list was sent to the function return 0 as the product
+	if(len(nums) == 0):
+		return 0
+
 	#Setup the variables
 	product = 1		#Start at 1 because of working with multiplication