From e1c2eda1a8eb3053488b3107d57b30ca58770df2 Mon Sep 17 00:00:00 2001 From: ivan Date: Wed, 16 Jul 2025 04:27:34 -0600 Subject: [PATCH] adding algo --- .../roman_to_integer.py | 22 +++++++++++++++++++ .../test_roman_to_integer_round_18.py | 17 ++++++++++++++ 2 files changed, 39 insertions(+) create mode 100644 src/my_project/interviews/top_150_questions_round_18/roman_to_integer.py create mode 100644 tests/test_150_questions_round_18/test_roman_to_integer_round_18.py diff --git a/src/my_project/interviews/top_150_questions_round_18/roman_to_integer.py b/src/my_project/interviews/top_150_questions_round_18/roman_to_integer.py new file mode 100644 index 00000000..36b4b118 --- /dev/null +++ b/src/my_project/interviews/top_150_questions_round_18/roman_to_integer.py @@ -0,0 +1,22 @@ +from typing import List, Union, Collection, Mapping, Optional +from abc import ABC, abstractmethod + +class Solution: + def romanToInt(self, s: str) -> int: + + roman_to_dict = {'I':1,'V':5,'X':10,'L':50,'C':100,'D':500,'M':1000} + + len_s = len(s) + + answer = roman_to_dict[s[len_s - 1]] + + for i in range(len_s - 1): + + if roman_to_dict[s[len_s - 2 - i]] \ + < roman_to_dict[s[len_s - 1 - i]]: + + answer -= roman_to_dict[s[len_s - 2 - i]] + else: + answer += roman_to_dict[s[len_s - 2 - i]] + + return answer \ No newline at end of file diff --git a/tests/test_150_questions_round_18/test_roman_to_integer_round_18.py b/tests/test_150_questions_round_18/test_roman_to_integer_round_18.py new file mode 100644 index 00000000..6480a4c8 --- /dev/null +++ b/tests/test_150_questions_round_18/test_roman_to_integer_round_18.py @@ -0,0 +1,17 @@ +import unittest +from src.my_project.interviews.top_150_questions_round_18\ +.roman_to_integer import Solution + +class RomanToIntegerTestCase(unittest.TestCase): + + def test_patter_one(self): + solution = Solution() + output = solution.romanToInt(s='VII') + target = 7 + self.assertEqual(output, target) + + def test_patter_two(self): + solution = Solution() + output = solution.romanToInt(s='IX') + target = 9 + self.assertEqual(output, target) \ No newline at end of file