raeq

import difflib


def similarity(left: str = "", right: str = "") -> float:

    seq = difflib.SequenceMatcher(None, left, right)
    return seq.ratio()


assert similarity("I like bananas", "I like bananarama") >= 0.80

raeq

def concatenate(*argv)->str:
    return ''.join(argv)


assert concatenate("a", "b", "c") == "abc"

raeq

def find_char_locations(original: str = "", character: str = "") -> list:

    return [index for index, char in enumerate(original) if char == character]


assert find_char_locations("The jolly green giant.", "e") == [2, 12, 13]

raeq

import itertools


def interleave(left: str = "", right: str = "") -> str:

    return "".join(
        [i + j for i, j in itertools.zip_longest(left, right, fillvalue="")])


assert interleave("ABCD", "01") == "A0B1CD"

raeq

def remove_by_index(original: str = "", index: int = -1) -> tuple:
    if len(original) >= index and index >= 0:
        return (original[:index] + original[index + 1:], original[index])
    else:
        return (original, "")


assert remove_by_index("0123456789", 5) == ("012346789", "5")

raeq

def remove_unwanted(original: str = "",
                    unwanted: str = "",
                    replacement: str = "") -> str:
                    
    return original.replace(unwanted, replacement)


assert remove_unwanted(original="M'The Real String'",
                       unwanted="M") == "'The Real String'"

raeq

def to_leetspeak(normal_speak:str="") -> str:

    leet_mapping = str.maketrans("iseoau", "1530^Ü")
    return normal_speak.translate(leet_mapping).title().swapcase()

assert to_leetspeak("the quick brown fox jumped over the lazy dogs") == \
    "tH3 qÜ1cK bR0wN f0x jÜMP3d 0v3r tH3 l^zY d0g5"

raeq

def to_uppercase(input_string:str) -> str:
    return input_string.upper()

def to_lowercase(input_string:str) -> str:
    return input_string.lower()

def to_sentencecase(input_string:str) -> str:
    return input_string.capitalize()

def to_titlecase(input_string:str) -> str:

raeq

def are_equal(first_comparator: str = "", second_comparator: str = "") -> bool:
    return first_comparator == second_comparator


assert are_equal("thing one", "thing two") is False
assert are_equal("a thing", "a " + "thing") is True

raeq

def string_reverse(forward: str = "") -> str:
    return forward[::-1]

assert string_reverse("hello") == "olleh"
assert string_reverse("goodbye") != "goodbye"