1 files changed, 39 insertions, 0 deletions
diff --git a/challenge-268/packy-anderson/python/ch-1.py b/challenge-268/packy-anderson/python/ch-1.py
new file mode 100755
index 0000000000..902a1fe2fb
--- /dev/null
+++ b/challenge-268/packy-anderson/python/ch-1.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python
+
+def magicNumber(x, y):
+    xS = sorted(x)
+    yS = sorted(y)
+    magic = yS.pop(0) - xS.pop(0)
+    while xS:
+        if yS.pop(0) - xS.pop(0) != magic:
+            return None; # no magic number
+    return magic
+
+def comma_join(arr):
+    return ', '.join(map(lambda i: str(i), arr))
+
+def solution(x, y):
+    print(f'Input: @x = ({comma_join(x)})')
+    print(f'       @y = ({comma_join(y)})')
+    magic = magicNumber(x, y)
+    if magic is None:
+        print('Output: no magic number')
+    else:
+        print(f'Output: {magic}\n')
+        print(f'@x = ({comma_join(x)})')
+        magicStr = '  '.join(map(lambda i: str(magic), x))
+        print(f'   +  {magicStr}')
+        yStr = ', '.join(map(lambda i: str(i+magic), x))
+        print(f'@y = ({yStr}')
+
+print('Example 1:')
+solution([3, 7, 5], [9, 5, 7])
+
+print('\nExample 2:')
+solution([1, 2, 1], [5, 4, 4])
+
+print('\nExample 3:')
+solution([2], [5])
+
+print('\nExample 4:')
+solution([1, 2], [4, 2])
+\ No newline at end of file