two_two

Given a list of ints, return true if every 2 that appears in the list is next to another 2.

two_two([4, 2, 2, 3]) -> true
two_two([2, 2, 4]) -> true
two_two([2, 2, 4, 2]) -> false

This exercise was taken from codingbat.com and has been adapted for the Python language. There are many great programming exercises there, but the majority are created for Java.

Starter Code

from typing import List


def two_two(nums: List[int]) -> bool:
    pass


result = two_two([4, 2, 2, 3])
print(result)

Tests

from main import two_two


def test_two_two_1():
    assert two_two([4, 2, 2, 3]) == True


def test_two_two_2():
    assert two_two([2, 2, 4]) == True


def test_two_two_3():
    assert two_two([2, 2, 4, 2]) == False


def test_two_two_4():
    assert two_two([1, 3, 4]) == True


def test_two_two_5():
    assert two_two([1, 2, 2, 3, 4]) == True


def test_two_two_6():
    assert two_two([1, 2, 3, 4]) == False


def test_two_two_7():
    assert two_two([2, 2]) == True


def test_two_two_8():
    assert two_two([2, 2, 7]) == True


def test_two_two_9():
    assert two_two([2, 2, 7, 2, 1]) == False


def test_two_two_10():
    assert two_two([4, 2, 2, 2]) == True


def test_two_two_11():
    assert two_two([2, 2, 2]) == True


def test_two_two_12():
    assert two_two([1, 2]) == False


def test_two_two_13():
    assert two_two([2]) == False


def test_two_two_14():
    assert two_two([1]) == True


def test_two_two_15():
    assert two_two([]) == True


def test_two_two_16():
    assert two_two([5, 2, 2, 3]) == True


def test_two_two_17():
    assert two_two([2, 2, 5, 2]) == False