challenge-27.md

Challenge #27 - Shift & Multiple Validators

For this task, you will write two validators.

• Shift Validator: Determines if each element is translated (added or subtracted) by a constant.
• Multiple Validator: Determines if each element is multiplied by a positive or negative constant.

A few examples to illustrate these respective functions:

Examples

is_shifted([1, 2, 3], [2, 3, 4]) ➞ True
# Each element is shifted +1

is_shifted([1, 2, 3], [-9, -8, -7]) ➞ True
# Each element is shifted -10

is_multiplied([1, 2, 3], [10, 20, 30]) ➞ True
# Each element is multiplied by 10

is_multiplied([1, 2, 3], [-0.5, -1, -1.5]) ➞ True
# Each element is multiplied by -1/2

is_multiplied([1, 2, 3], [0, 0, 0]) ➞ True
# Each element is multiplied by 0

Notes

• Keep in mind one special case: if the second list is a list of only zeroes, then the first list can be anything (the multiplier will be 0).

challenge_tests.py

import unittest
from typing import List


def is_shifted(list_a: List[int], list_b: List[int]) -> bool:
    return False  # Replace with your code!


def is_multiplied(list_a: List[int], list_b: List[int]) -> bool:
    return False  # Replace with your code!


class TestValidators(unittest.TestCase):
    def test_1(self):
        self.assertEqual(is_shifted([1, 2, 3], [2, 3, 4]), True)

    def test_2(self):
        self.assertEqual(is_shifted([1, 2, 3], [-9, -8, -7]), True)

    def test_3(self):
        self.assertEqual(is_multiplied([1, 2, 3], [10, 20, 30]), True)

    def test_4(self):
        self.assertEqual(is_multiplied([1, 2, 3], [-0.5, -1, -1.5]), True )

    def test_5(self):
        self.assertEqual(is_multiplied([1, 2, 3], [0, 0, 0]), True )

    def test_6(self):
        self.assertEqual(is_shifted([1, 2, 3], [2, 3, 5]), False)

    def test_7(self):
        self.assertEqual(is_shifted([1, 2, 3], [-9, -1, -7]), False)

    def test_8(self):
        self.assertEqual(is_multiplied([1, 2, 3], [10, 20, 29]), False)

    def test_9(self):
        self.assertEqual(is_multiplied([1, 2, 3], [-0.5, -1, -2]), False)

    def test_10(self):
        self.assertEqual(is_multiplied([1, 2, 3], [0, 0, 1]), False)


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

credits.md

Found on Edabit: Shift and Multiple Validators