2 files changed, 183 insertions, 0 deletions
diff --git a/challenge-227/robert-dicicco/python/ch-1.py b/challenge-227/robert-dicicco/python/ch-1.py
new file mode 100644
index 0000000000..20c8ed326e
--- /dev/null
+++ b/challenge-227/robert-dicicco/python/ch-1.py
@@ -0,0 +1,52 @@
+#!/usr/bin/env python
+'''
+-------------------------------------
+AUTHOR: Robert DiCicco
+DATE  : 2023-07-24
+Challenge 227 Task 1 Friday 13th ( Python )
+-------------------------------------
+'''
+
+from datetime import date
+import sys
+
+n = len(sys.argv)
+if n == 1:
+    print("Please select a year between 1753 and 9999")
+    sys.exit(0)
+
+year = int(sys.argv[1])
+if year < 1753 or year > 9999:
+    print("Please select a year between 1753 and 9999")
+    sys.exit(0)
+
+for month in range(1,12):
+    d = date(year, month, 13)
+    wd = d.weekday()
+    if wd == 4:   # Monday = 0, Sunday = 6
+        print(f"{year} {month} 13 is a Friday")
+    month += 1
+
+'''
+-------------------------------------
+SAMPLE OUTPUT
+python .\Friday13.py 2023
+
+2023 1 13 is a Friday
+2023 10 13 is a Friday
+
+python .\Friday13.py 1753
+
+1753 4 13 is a Friday
+1753 7 13 is a Friday
+-------------------------------------
+'''
+
+
+
+
+
+
+
+
+
diff --git a/challenge-227/robert-dicicco/python/ch-2.py b/challenge-227/robert-dicicco/python/ch-2.py
new file mode 100644
index 0000000000..e089dcad97
--- /dev/null
+++ b/challenge-227/robert-dicicco/python/ch-2.py
@@ -0,0 +1,131 @@
+#!/usr/bin/env python
+'''
+I got these Roman-Int, Int-Roman routines from O'Reilly
+Module: Roman Numerals
+Credit: Paul M. Winkler
+
+AUTHOR: Robert DiCicco
+DATE  : 2023-07-26
+Challenge 227 Task 2 Roman Maths ( Python )
+'''
+import sys
+
+class py_solution:
+    def int_to_Roman(self, num):
+        val = [
+            1000, 900, 500, 400,
+            100, 90, 50, 40,
+            10, 9, 5, 4,
+            1
+            ]
+        syb = [
+            "M", "CM", "D", "CD",
+            "C", "XC", "L", "XL",
+            "X", "IX", "V", "IV",
+            "I"
+            ]
+        roman_num = ''
+        i = 0
+        while  num > 0:
+            for _ in range(num // val[i]):
+                roman_num += syb[i]
+                num -= val[i]
+            i += 1
+        return roman_num
+
+
+    def roman_to_int(self, input):
+        input = input.upper()
+        roman_numeral_map = (('M', 1000, 3), ('CM', 900, 1),
+            ('D', 500, 1), ('CD', 400, 1),
+            ('C', 100, 3), ('XC', 90, 1),
+            ('L', 50, 1), ('XL', 40, 1),
+            ('X', 10, 3), ('IX', 9, 1),
+            ('V', 5, 1), ('IV', 4, 1), ('I', 1, 3))
+        result, index = 0, 0
+        for numeral, value, maxcount in roman_numeral_map:
+            count = 0
+            while input[index: index+len(numeral)] == numeral:
+                count += 1 # how many of this numeral we have
+                result += value
+                index += len(numeral)
+        return result
+
+def main():
+    n = len(sys.argv)
+    if n != 2:
+        print("Please enter a math problem using Roman numerals")
+        sys.exit(1)
+
+    problem = sys.argv[1]
+    parts = problem.split()
+    left = parts[0]
+    op = parts[1]
+    right = parts[2]
+    lft = py_solution().roman_to_int(left)
+    rt  = py_solution().roman_to_int(right)
+
+    if ( op == '-' and lft - rt == 0):
+        print(f"{problem} est nulla")
+        sys.exit(1)
+    elif (op == '/' and (lft % rt) > 0 ):
+        print(f"{problem} non potest")
+        sys.exit(1)
+    elif (op == '+' and lft + rt > 3999):
+        print(f"{problem} non potest");
+        sys.exit(1)
+    elif (op == '-' and (lft - rt < 0)):
+        print(f"{problem} non potest")
+        sys.exit(1)
+    elif (op == '/' and (lft % rt != 0)):
+        print(f"{problem} non potest")
+        sys.exit(1)
+
+    if ( op == '+'):
+        val = py_solution().int_to_Roman(lft + rt)
+    elif ( op == '-'):
+        val = py_solution().int_to_Roman(lft - rt)
+    elif ( op == '/'):
+        val = py_solution().int_to_Roman(int(lft / rt))
+    elif ( op == '*'):
+        val = py_solution().int_to_Roman(int(lft * rt))
+    elif ( op == '**'):
+        val = py_solution().int_to_Roman(int(lft ** rt))
+
+    print(f"{problem} => {val}")
+
+if __name__ == "__main__":
+    main()
+
+'''
+-----------------------------------------------------------------
+SAMPLE OUTPUT
+python .\RomanMath.py "IV + V"
+IV + V => IX
+
+python .\RomanMath.py "M - I"
+M - I => CMXCIX
+
+python .\RomanMath.py "X / II"
+X / II => V
+
+python .\RomanMath.py "XI * VI"
+XI * VI => LXVI
+
+python .\RomanMath.py "VII ** III"
+VII ** III => CCCXLIII
+
+python .\RomanMath.py "V - V"
+V - V est nulla
+
+python .\RomanMath.py "V / II"
+V / II non potest
+
+python .\RomanMath.py "MMM + M"
+MMM + M non potest
+
+python .\RomanMath.py "V - X"
+V - X non potest
+'''
+
+