Merge pull request #3 from Shuchi2211/Shuchi2211-patch-3

Create rom_to_dec.py

Author: Shuchi2211

Diff for: Basic Scripts/rom_to_dec.py

@@ -0,0 +1,23 @@
+
+tallies = {
+    'I': 1,
+    'V': 5,
+    'X': 10,
+    'L': 50,
+    'C': 100,
+    'D': 500,
+    'M': 1000,
+    # specify more numerals if you wish
+}
+
+def RomanNumeralToDecimal(romanNumeral):
+    sum = 0
+    for i in range(len(romanNumeral) - 1):
+        left = romanNumeral[i]
+        right = romanNumeral[i + 1]
+        if tallies[left] < tallies[right]:
+            sum -= tallies[left]
+        else:
+            sum += tallies[left]
+    sum += tallies[romanNumeral[-1]]
+    return sum