Created
August 29, 2022 16:57
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array in python
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from dataclasses import dataclass, field | |
from typing import Any, Union, TypeVar, Literal, Tuple, List | |
T = TypeVar("T") | |
null = TypeVar("null", None, Literal["null", "Null", "NULL"]) | |
def size_check(_size: int, _id: int) -> None: | |
if not isinstance(_id, int): | |
raise TypeError("index type of array should be int") | |
if _id < 0: | |
raise ValueError( | |
f"array index should be in range {0!r} ... {(_size-1)!r}") | |
if _size - 1 < _id: | |
raise ValueError("array index more than size of array") | |
def type_check(_type: Any, value: Any) -> None: | |
if not isinstance(value, _type): | |
raise TypeError( | |
f"data type should be {_type!r} youre data is {type(value)!r}") | |
@dataclass(frozen=True) | |
class Array: | |
""" | |
make static array like c for you | |
""" | |
_size: int = field(compare=False) | |
_type: Any = field(default=int) | |
_data: list = field(default_factory=list, init=False, | |
repr=False, compare=True) | |
def __post_init__(self) -> None: | |
object.__setattr__(self, "_data", [null] * self._size) | |
def __setitem__(self, key: int, value: Any) -> None: | |
size_check(self._size, key) | |
type_check(self._type, value) | |
self._data[key] = value | |
def __getitem__(self, key: int) -> Union[T, null]: | |
size_check(self._size, key) | |
return self._data[key] | |
def __len__(self) -> int: | |
return len(list(filter(lambda x: x != null, self._data))) | |
def r_shift(self) -> None: | |
for i, j in zip(range(self._size-1, -1, -1), range(self._size-2, -1, -1)): | |
self._data[i], self._data[j] = self._data[j], self._data[i] | |
def l_shift(self) -> None: | |
for i, j in zip(range(0, self._size), range(1, self._size)): | |
self._data[i], self._data[j] = self._data[j], self._data[i] | |
@property | |
def array(self) -> List[Union[T, null]]: | |
return self._data.copy() | |
def insert(self, value: T, _id: int = 0) -> None: | |
size_check(self._size, _id) | |
type_check(self._type, value) | |
self._data[_id] = value | |
def remove(self, value: T) -> Union[T, null]: | |
arr = list(map(lambda x: x == value, self._data)) | |
if any(arr): | |
i = arr.index(True) | |
v = self._data[i] | |
self._data[i] = null | |
return v | |
return null | |
def pop(self) -> Tuple[Union[int, null], Union[T, null]]: | |
index, value = None, None | |
for i in range(self._size-1, -1, -1): | |
if self._data[i] != null: | |
index, value = (i, self._data[i]) | |
break | |
if index and value: | |
self._data[index] = null | |
return index, value | |
return (null, null) | |
def search(self, value: T) -> bool: | |
type_check(self._type, value) | |
return any(map(lambda x: x == value, self._data)) |
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