Partition deepmind directory into two parts

Since I did not pass my one-site interview with DM, but I have been invited to
attempt again, I decided to partition this directory into two parts:
1. part_one: Hosting the exercises that I completed before my first attempt at
   earning the job.
2. part_two: Hosting the exercise that I will complete before my second attempt
   at earning the job.

deepmind/reverse-linked-list.py

@@ -1,74 +0,0 @@
-import unittest
-
-
-def reverse(node):
-    prev = None
-    next = None
-    curr = node
-
-    while curr:
-        next = curr.next
-        curr.next = prev
-        prev = curr
-        curr = next
-
-    return prev
-
-
-# Tests
-class Test(unittest.TestCase):
-    class LinkedListNode(object):
-        def __init__(self, value, next=None):
-            self.value = value
-            self.next = next
-
-        def get_values(self):
-            node = self
-            values = []
-            while node is not None:
-                values.append(node.value)
-                node = node.next
-            return values
-
-    def test_short_linked_list(self):
-        second = Test.LinkedListNode(2)
-        first = Test.LinkedListNode(1, second)
-
-        result = reverse(first)
-        self.assertIsNotNone(result)
-
-        actual = result.get_values()
-        expected = [2, 1]
-        self.assertEqual(actual, expected)
-
-    def test_long_linked_list(self):
-        sixth = Test.LinkedListNode(6)
-        fifth = Test.LinkedListNode(5, sixth)
-        fourth = Test.LinkedListNode(4, fifth)
-        third = Test.LinkedListNode(3, fourth)
-        second = Test.LinkedListNode(2, third)
-        first = Test.LinkedListNode(1, second)
-
-        result = reverse(first)
-        self.assertIsNotNone(result)
-
-        actual = result.get_values()
-        expected = [6, 5, 4, 3, 2, 1]
-        self.assertEqual(actual, expected)
-
-    def test_one_element_linked_list(self):
-        first = Test.LinkedListNode(1)
-
-        result = reverse(first)
-        self.assertIsNotNone(result)
-
-        actual = result.get_values()
-        expected = [1]
-        self.assertEqual(actual, expected)
-
-    def test_empty_linked_list(self):
-        result = reverse(None)
-        self.assertIsNone(result)
-
-
-unittest.main(verbosity=2)