make_abba

Given two strings, a and b, return the result of putting them together in the order abba, e.g. “Hi” and “Bye” returns “HiByeByeHi”.

make_abba("Hi", "Bye") -> "HiByeByeHi"
make_abba("Yo", "Alice") -> "YoAliceAliceYo"
make_abba("What", "Up") -> "WhatUpUpWhat"

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

def make_abba(a: str, b: str) -> str:
    pass


result = make_abba('Hi', 'Bye')
print(result)

Tests

from main import make_abba


def test_make_abba_1():
    assert make_abba('Hi', 'Bye') == 'HiByeByeHi'


def test_make_abba_2():
    assert make_abba('Yo', 'Alice') == 'YoAliceAliceYo'


def test_make_abba_3():
    assert make_abba('What', 'Up') == 'WhatUpUpWhat'


def test_make_abba_4():
    assert make_abba('aaa', 'bbb') == 'aaabbbbbbaaa'


def test_make_abba_5():
    assert make_abba('x', 'y') == 'xyyx'


def test_make_abba_6():
    assert make_abba('x', '') == 'xx'


def test_make_abba_7():
    assert make_abba('', 'y') == 'yy'


def test_make_abba_8():
    assert make_abba('Bo', 'Ya') == 'BoYaYaBo'


def test_make_abba_9():
    assert make_abba('Ya', 'Ya') == 'YaYaYaYa'