Challenge #32 - Compass Directions

challenge-32.md

Challenge #32 - Compass Directions

You face 1 out of the 4 compass directions: N, S, E or W.

• A left turn is a counter-clockwise turn. e.g. N (left-turn) ➞ W.
• A right turn is a clockwise turn. e.g. N (right-turn) ➞ E.

Create a function that takes in a starting direction and a sequence of left and right turns, and outputs the final direction faced.

Examples

final_direction("N", ["L", "L", "L"]) ➞ "E"

final_direction("N", ["R", "R", "R", "L"]) ➞ "S"

final_direction("N", ["R", "R", "R", "R"]) ➞ "N"

final_direction("N", ["R", "L"]) ➞ "N"

Notes

• You can only face 1 out of the 4 compass directions: N, S, E or W.

challenge_tests.py

import unittest
from typing import List


def final_direction(facing: str, turns: List[str]) -> str:
    return ""  # Put your code here


class TestFinalDirection(unittest.TestCase):
    def test_1(self):
        self.assertEqual(final_direction('N', ['L', 'L', 'L']), 'E')

    def test_2(self):
        self.assertEqual(final_direction('N', ['R', 'R', 'R', 'R', 'R', 'R', 'R']), 'W')

    def test_3(self):
        self.assertEqual(final_direction('N', ['R', 'R', 'R', 'L']), 'S')

    def test_4(self):
        self.assertEqual(final_direction('N', ['R', 'R', 'R', 'R']), 'N')

    def test_5(self):
        self.assertEqual(final_direction('N', ['R', 'L']), 'N')

    def test_6(self):
        self.assertEqual(final_direction('S', ['R', 'L', 'R', 'L', 'R']), 'W')

    def test_7(self):
        self.assertEqual(final_direction('S', ['R', 'L', 'R', 'L', 'R', 'L']), 'S')

    def test_8(self):
        self.assertEqual(final_direction('S', ['R', 'L', 'R', 'L', 'L', 'L']), 'N')

    def test_9(self):
        self.assertEqual(final_direction('S', ['R', 'R']), 'N')

    def test_10(self):
        self.assertEqual(final_direction('S', ['R']), 'W')

    def test_11(self):
        self.assertEqual(final_direction('S', ['L']), 'E')

    def test_12(self):
        self.assertEqual(final_direction('W', ['L', 'R', 'R']), 'N')

    def test_13(self):
        self.assertEqual(final_direction('W', ['R', 'L', 'L']), 'S')

    def test_14(self):
        self.assertEqual(final_direction('E', ['L', 'R', 'R']), 'S')

    def test_15(self):
        self.assertEqual(final_direction('E', ['R', 'L', 'L']), 'N')


if __name__ == "__main__":
    unittest.main()

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Found on Edabit: Compass Directions