tvl-depot/data_structures_and_algorithms/find-unique-int-among-duplicates.py
William Carroll 5c9079a410 Splice ./universe directory into ./
Manually merging:
- README.md: I added the description from universe/README.md into the heading of
  dotfiles/README.md.
- .envrc: dotfiles/.envrc was a superset of universe/.envrc
- .gitignore: Adding some of the ignored patterns from universe/.gitignore to
  dotfiles/.gitignore

Everything else here should be a simple rename.
2020-01-29 14:43:20 +00:00

45 lines
1.3 KiB
Python

import unittest
################################################################################
# Solution
################################################################################
def find_unique_delivery_id(xs):
a = 0
for x in xs:
a ^= x
return a
################################################################################
# Tests
################################################################################
class Test(unittest.TestCase):
def test_one_drone(self):
actual = find_unique_delivery_id([1])
expected = 1
self.assertEqual(actual, expected)
def test_unique_id_comes_first(self):
actual = find_unique_delivery_id([1, 2, 2])
expected = 1
self.assertEqual(actual, expected)
def test_unique_id_comes_last(self):
actual = find_unique_delivery_id([3, 3, 2, 2, 1])
expected = 1
self.assertEqual(actual, expected)
def test_unique_id_in_middle(self):
actual = find_unique_delivery_id([3, 2, 1, 2, 3])
expected = 1
self.assertEqual(actual, expected)
def test_many_drones(self):
actual = find_unique_delivery_id(
[2, 5, 4, 8, 6, 3, 1, 4, 2, 3, 6, 5, 1])
expected = 8
self.assertEqual(actual, expected)
unittest.main(verbosity=2)