solved(python): baekjoon 14626

Author: himitery

baekjoon/python/14626/__init__.py

@@ -0,0 +1,26 @@
+import sys
+
+read = lambda: sys.stdin.readline().rstrip()
+
+
+class Problem:
+    def __init__(self):
+        self.isbn = list(read())
+
+    def solve(self) -> None:
+        total = sum([(1 if idx % 2 == 0 else 3) * int(x) for idx, x in enumerate(self.isbn) if x != "*"])
+
+        print(self.find_unknown(total))
+
+    def find_unknown(self, total: int) -> int:
+        weight = 1 if self.isbn.index("*") % 2 == 0 else 3
+
+        for candidate in range(10):
+            if (total + weight * candidate) % 10 == 0:
+                return candidate
+
+        return 0
+
+
+if __name__ == "__main__":
+    Problem().solve()

baekjoon/python/14626/main.py

@@ -0,0 +1,18 @@
+[
+  {
+    "input": [
+      "9788968322*73"
+    ],
+    "expected": [
+      "2"
+    ]
+  },
+  {
+    "input": [
+      "97389414*4397"
+    ],
+    "expected": [
+      "0"
+    ]
+  }
+]

baekjoon/python/14626/sample.json

@@ -0,0 +1,36 @@
+import json
+import os.path
+import unittest
+from io import StringIO
+from unittest.mock import patch
+
+from parameterized import parameterized
+
+from main import Problem
+
+
+def load_sample(filename: str):
+    path = os.path.join(os.path.dirname(os.path.abspath(__file__)), filename)
+
+    with open(path, "r") as file:
+        return [(case["input"], case["expected"]) for case in json.load(file)]
+
+
+class TestCase(unittest.TestCase):
+    @parameterized.expand(load_sample("sample.json"))
+    def test_case(self, case: str, expected: list[str]):
+        # When
+        with (
+            patch("sys.stdin.readline", side_effect=case),
+            patch("sys.stdout", new_callable=StringIO) as output,
+        ):
+            Problem().solve()
+
+            result = output.getvalue().rstrip()
+
+        # Then
+        self.assertEqual("\n".join(expected), result)
+
+
+if __name__ == "__main__":
+    unittest.main()