TWC195

1 files changed, 14 insertions, 0 deletions

diff --git a/challenge-195/deadmarshal/python/ch2.py b/challenge-195/deadmarshal/python/ch2.py
new file mode 100644
index 0000000000..783f93555b
--- /dev/null
+++ b/challenge-195/deadmarshal/python/ch2.py
@@ -0,0 +1,14 @@
+from functools import reduce
+
+def most_frequent_even(arr):
+  if all(map(lambda n: n % 2 != 0, arr)): return -1
+  d = {}
+  for i in arr:
+    if i % 2 == 0: d[i] = d.get(i, 0) + 1
+  if len(d.values()) == len(set(d.values())): return min(d)
+  return reduce(lambda a,b:a if d[a] > d[b] else b, d.keys())
+
+print(most_frequent_even([1,1,2,6,2]))
+print(most_frequent_even([1,3,5,7]))
+print(most_frequent_even([6,4,4,6,1]))
+