Merge branch 'manwar:master' into master

3 files changed, 91 insertions, 0 deletions

diff --git a/challenge-277/sgreen/python/ch-1.py b/challenge-277/sgreen/python/ch-1.py
new file mode 100755
index 0000000000..0338922088
--- /dev/null
+++ b/challenge-277/sgreen/python/ch-1.py
@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+
+from collections import Counter
+import sys
+
+
+def count_common(*words_list: list[list]) -> int:
+    count = 0
+
+    # Take a list of unique words in the first list
+    for word in set(words_list[0]):
+        # Check that it occurs once in each list
+        for words in words_list:
+            if words.count(word) != 1:
+                # It doesn't, go to the next word.
+                break
+        else:
+            # It does, add to the count
+            count+=1
+
+    # Count the number of words that appear in all lists
+    return count
+
+def main():
+    # Convert two space-separated strings into muliple lists
+    word_list = (words.split(' ')for words in sys.argv[1:])
+    result = count_common(*word_list)
+    print(result)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/challenge-277/sgreen/python/ch-2.py b/challenge-277/sgreen/python/ch-2.py
new file mode 100755
index 0000000000..7896268051
--- /dev/null
+++ b/challenge-277/sgreen/python/ch-2.py
@@ -0,0 +1,27 @@
+#!/usr/bin/env python3
+
+import sys
+
+
+def strong_pair(ints: list) -> int:
+    # Remove duplicates
+    ints = list(set(ints))
+    count = 0
+
+    for i in range(len(ints)-1):
+        for j in range(i+1, len(ints)):
+            if abs(ints[i]-ints[j]) < min(ints[i], ints[j]):
+                count += 1
+
+    return count
+
+
+def main():
+    # Convert input into integers
+    array = [int(n) for n in sys.argv[1:]]
+    result = strong_pair(array)
+    print(result)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/challenge-277/sgreen/python/test.py b/challenge-277/sgreen/python/test.py
new file mode 100755
index 0000000000..fd5e90dbf2
--- /dev/null
+++ b/challenge-277/sgreen/python/test.py
@@ -0,0 +1,32 @@
+#!/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.count_common(
+                ["Perl", "is", "my", "friend"],
+                ["Perl", "and", "Raku", "are", "friend"]),
+            2)
+        self.assertEqual(
+            ch_1.count_common(
+                ["Perl", "and", "Python", "are", "very", "similar"],
+                ["Python", "is", "top", "in", "guest", "languages"]),
+            1)
+        self.assertEqual(
+            ch_1.count_common(
+                ["Perl", "is", "imperative", "Lisp", "is", "functional"],
+                ["Crystal", "is", "similar", "to", "Ruby"]),
+            0)
+
+    def test_ch_2(self):
+        self.assertEqual(ch_2.strong_pair([1, 2, 3, 4, 5]), 4)
+        self.assertEqual(ch_2.strong_pair([5, 7, 1]), 1)
+
+
+if __name__ == '__main__':
+    unittest.main()