Merge pull request #6803 from Maanghel/main

#11 - Python

Author: Roswell468

Retos/Reto #11 - URL PARAMS [Fácil]/python/Maanghel.py

@@ -0,0 +1,100 @@
+"""
+Dada una URL con parámetros, crea una función que obtenga sus valores.
+No se pueden usar operaciones del lenguaje que realicen esta tarea directamente.
+
+Ejemplo: En la url https://retosdeprogramacion.com?year=2023&challenge=0
+los parámetros serían ["2023", "0"]
+"""
+
+from typing import List
+
+def url_parameters(url: str) -> List[str]:
+    """
+    Extracts parameter values from a given URL string.
+
+    Args:
+        url (str): The input URL.
+
+    Returns:
+        List[str]: A list of parameter values found in the URL.
+
+    Raises:
+        TypeError: If the URL is not a string.
+        ValueError: If the URL is empty.
+    """
+    _validate_url(url)
+
+    parameters = []
+    start = None
+    for i, c in enumerate(url):
+        if c == '?':
+            start = i + 1
+            break
+    if start is None:
+        return parameters
+
+    current = start
+    while current < len(url):
+        eq_index = _search_eq_index(current, url)
+        if eq_index is None:
+            return parameters
+
+        amp_index = _search_amp_index(eq_index, url)
+        data = url[eq_index + 1: amp_index]
+        parameters.append(data)
+        current = amp_index + 1
+
+    return parameters
+
+def _search_eq_index(current_index: int, url: str) -> int | None:
+    """
+    Searches for the next '=' symbol in the URL starting from the given index.
+
+    Args:
+        current_index (int): The index to start searching from.
+        url (str): The input URL.
+
+    Returns:
+        int | None: The index of '=' if found, otherwise None.
+    """
+    for i in range(current_index, len(url)):
+        if url[i] == '=':
+            return i
+    return None
+
+def _search_amp_index(eq_index: int, url: str) -> int:
+    """
+    Searches for the next '&' symbol in the URL starting after the '=' index.
+
+    Args:
+        eq_index (int): The index of the last '='.
+        url (str): The input URL.
+
+    Returns:
+        int: The index of '&' if found, otherwise the length of the URL.
+    """
+    for i in range(eq_index + 1, len(url)):
+        if url[i] == '&':
+            return i
+    return len(url)
+
+def _validate_url(url: str) -> None:
+    """
+    Validates that the input is a non-empty string.
+
+    Args:
+        url (str): The URL to validate.
+
+    Raises:
+        TypeError: If the URL is not a string.
+        ValueError: If the URL is empty.
+    """
+    if not isinstance(url, str):
+        raise TypeError("La URL ingresada debe ser una cadena de texto.")
+    if not url:
+        raise ValueError("Debe ingresar una URL para proseguir.")
+
+
+if __name__ == "__main__":
+    URL: str = "https://retosdeprogramacion.com?year=2023&challenge=0"
+    print(url_parameters(URL))