Challenge_5

challenge_5/python/alexbotello/FindTheDifference.py

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+from collections import Counter
+
+
+class Solution:
+    def findTheDifference(self, s, t):
+
+        s = dict(Counter(s))
+        t = dict(Counter(t))
+
+        for key in t.keys():
+            if key not in s.keys():
+                s[key] = 0
+            if s[key] - t[key] <= -1:
+                return key
+
+
+if __name__ == '__main__':
+
+	test_case = Solution()
+	s, t = [input() for _ in range(2)]
+	print('\n' + test_case.findTheDifference(s, t))

challenge_5/python/alexbotello/README.md

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+# Find The Difference
+###### Language Version (Python 3.6.0)
+
+### Compile
+
+```
+python test.py
+```
+```
+python FindTheDifference.py
+```
+
+### How To Use
+
+Run test.py to check against unit test
+
+Run FindTheDifference.py to test your own implementation
+- Enter two lines of input, both must be a lowercase string