2 files changed, 58 insertions, 0 deletions
diff --git a/challenge-261/steven-wilson/python/ch-1.py b/challenge-261/steven-wilson/python/ch-1.py
new file mode 100644
index 0000000000..9682017e67
--- /dev/null
+++ b/challenge-261/steven-wilson/python/ch-1.py
@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+
+
+def element_digit_sum(*elements):
+    ''' Given an array of integers, evaluate the absolute difference between
+    element and digit sum of the given array.
+    >>> element_digit_sum(1,2,3,45)
+    36
+    >>> element_digit_sum(1,12,3)
+    9
+    >>> element_digit_sum(1,2,3,4)
+    0
+    >>> element_digit_sum(236, 416, 336, 350)
+    1296
+    '''
+    return abs(sum_digits(elements) - sum(elements))
+
+
+def sum_digits(elements):
+    return sum(int(char) for elem in elements for char in str(elem))
+
+
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod()
diff --git a/challenge-261/steven-wilson/python/ch-2.py b/challenge-261/steven-wilson/python/ch-2.py
new file mode 100644
index 0000000000..3f63e0b83d
--- /dev/null
+++ b/challenge-261/steven-wilson/python/ch-2.py
@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+
+
+def multiply_by_two(*elements, start):
+    ''' Given an array of integers and a start integer
+
+    a) Look for start in the array, if found multiply the number by 2
+    b) If not found stop the process otherwise repeat
+
+    In the end return the final value.
+
+    >>> multiply_by_two(5,3,6,1,12, start=3)
+    24
+    >>> multiply_by_two(1,2,4,3, start=1)
+    8
+    >>> multiply_by_two(5,6,7, start=2)
+    2
+    '''
+    if not all(isinstance(elem, int) for elem in elements) or not isinstance(start, int):
+        raise ValueError('Input must consist of integers')
+
+    elements_set = set(elements)
+    while start in elements_set:
+        start *= 2
+
+    return start
+
+
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod()