Added functions to determine the gcd of 2 nums

Algorithms.py

@@ -220,3 +220,12 @@ def getPermutations(master: str, num: int = 0) -> list:
 		perms.sort()
 	#Return the list
 	return perms
+
+#This function returns the GCD of the two numbers sent to it
+def gcd(num1: int, num2: int) -> int:
+	while((num1 != 0) and (num2 != 0)):
+		if(num1 > num2):
+			num1 %= num2
+		else:
+			num2 %= num1
+	return num1 | num2