Merge pull request #10637 from simongreen-net/master

sgreen solutions to challenge 282

3 files changed, 83 insertions, 0 deletions

diff --git a/challenge-282/sgreen/python/ch-1.py b/challenge-282/sgreen/python/ch-1.py
new file mode 100755
index 0000000000..91178462c1
--- /dev/null
+++ b/challenge-282/sgreen/python/ch-1.py
@@ -0,0 +1,30 @@
+#!/usr/bin/env python3
+
+import sys
+
+
+def good_integer(n: int) -> str:
+    # Convert the integer to a string
+    value = str(n)
+    length = len(value)
+
+    for pos in range(length-2):
+        if (
+            value[pos] == value[pos+1]
+            and value[pos] == value[pos+2]
+            and (pos == 0 or value[pos] != value[pos-1])
+            and (pos + 3 == length or value[pos] != value[pos+3])
+        ):
+            return value[pos:pos+3]
+
+    return '-1'
+
+
+def main():
+    # Convert input into an integer
+    result = good_integer(int(sys.argv[1]))
+    print(result)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/challenge-282/sgreen/python/ch-2.py b/challenge-282/sgreen/python/ch-2.py
new file mode 100755
index 0000000000..4673e3aef7
--- /dev/null
+++ b/challenge-282/sgreen/python/ch-2.py
@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+
+import sys
+
+
+def key_changes(s: str) -> int:
+    # Convert the string to lower case
+    s = s.lower()
+
+    # Start with the first letter
+    current_key = s[0]
+
+    # Count the number of times we change keys
+    changes = 0
+
+    for letter in s:
+        if letter != current_key:
+            # We need to change key
+            current_key = letter
+            changes += 1
+
+    return changes
+
+
+def main():
+    # Convert input into integers
+    result = key_changes(sys.argv[1])
+    print(result)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/challenge-282/sgreen/python/test.py b/challenge-282/sgreen/python/test.py
new file mode 100755
index 0000000000..d9a717e276
--- /dev/null
+++ b/challenge-282/sgreen/python/test.py
@@ -0,0 +1,21 @@
+#!/usr/bin/env python3
+
+import unittest
+ch_1 = __import__('ch-1')
+ch_2 = __import__('ch-2')
+
+
+class TestClass(unittest.TestCase):
+    def test_ch_1(self):
+        self.assertEqual(ch_1.good_integer(12344456), '444')
+        self.assertEqual(ch_1.good_integer(1233334), '-1')
+        self.assertEqual(ch_1.good_integer(10020003), '000')
+
+    def test_ch_2(self):
+        self.assertEqual(ch_2.key_changes('pPeERrLl'), 3)
+        self.assertEqual(ch_2.key_changes('rRr'), 0)
+        self.assertEqual(ch_2.key_changes('GoO'), 1)
+
+
+if __name__ == '__main__':
+    unittest.main()