Merge pull request #8820 from oWnOIzRi/week237

add solutions week 237 in python

2 files changed, 72 insertions, 0 deletions

diff --git a/challenge-237/steven-wilson/python/ch-01.py b/challenge-237/steven-wilson/python/ch-01.py
new file mode 100644
index 0000000000..6da63f3aa6
--- /dev/null
+++ b/challenge-237/steven-wilson/python/ch-01.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+
+from datetime import date, timedelta
+
+
+def seize_the_day(year, month, week, dow):
+    """ Given a year, a month, a week of month, and a day of week 
+    (1 (Mon) .. 7 (Sun)), return the day of month, 0 is returned if not 
+    possible
+    >>> seize_the_day(2024, 4, 3, 2)
+    16
+    >>> seize_the_day(2025, 10, 2, 4)
+    9
+    >>> seize_the_day(2026, 8, 5, 3)
+    0
+    """
+    d = date(year, month, (1 + (week - 1) * 7))
+    while(d.isoweekday() != dow):
+        d = d + timedelta(days=1)
+    if(d.month == month):
+        return d.day
+    else:
+        return 0
+
+
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod()
diff --git a/challenge-237/steven-wilson/python/ch-02.py b/challenge-237/steven-wilson/python/ch-02.py
new file mode 100644
index 0000000000..c7ff7edd00
--- /dev/null
+++ b/challenge-237/steven-wilson/python/ch-02.py
@@ -0,0 +1,43 @@
+#!/usr/bin/env python3
+
+from itertools import permutations
+
+
+def calculate_greatness(elements, permutation):
+    ''' Calculate greatness of array of integers and a permutation
+    >>> calculate_greatness([1, 3, 5, 2, 1, 3, 1], [2, 5, 1, 3, 3, 1, 1])
+    4
+    >>> calculate_greatness([1, 2, 3, 4], [2, 3, 4, 1])
+    3
+    >>> calculate_greatness([1, 2], [1, 2])
+    0
+    '''
+    count = 0
+    for index, elem in enumerate(elements):
+        if elem < permutation[index]:
+            count += 1
+    return count
+
+
+def maximise_greatness(elements):
+    ''' return maximum possible greatness from permutations of an array of integers
+    >>> maximise_greatness([1, 3, 5, 2, 1, 3, 1])
+    4
+    >>> maximise_greatness([1, 2, 3, 4])
+    3
+    >>> maximise_greatness([1, 1, 1])
+    0
+    '''
+    perms = set(permutations(elements))
+    max_greatness = 0
+    for permutation in perms:
+        greatness = calculate_greatness(elements, permutation)
+        if greatness > max_greatness:
+            max_greatness = greatness
+    return max_greatness
+
+
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod()