tvl-depot/users/wpcarro/scratch/data_structures_and_algorithms/find-unique-int-among-duplicates.py
Vincent Ambo 019f8fd211 subtree(users/wpcarro): docking briefcase at '24f5a642'
git-subtree-dir: users/wpcarro
git-subtree-mainline: 464bbcb15c
git-subtree-split: 24f5a642af
Change-Id: I6105b3762b79126b3488359c95978cadb3efa789
2021-12-14 02:15:47 +03:00

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)