solved task

app/main.py

@@ -1,34 +1,81 @@
+from __future__ import annotations
+
+
 class Deck:
-    def __init__(self, row, column, is_alive=True):
-        pass
+    def __init__(self, row: int, column: int, is_alive: bool = True) -> None:
+        self.row = row
+        self.column = column
+        self.is_alive = is_alive
 
 
 class Ship:
-    def __init__(self, start, end, is_drowned=False):
-        # Create decks and save them to a list `self.decks`
-        pass
+    def __init__(
+            self,
+            begin: tuple,
+            end: tuple,
+            is_drowned: bool = False
+    ) -> None:
+        if begin == end:
+            self.decks = [Deck(*begin)]
+        else:
+            self.decks = [Deck(*begin), Deck(*end)]
+            row_distance = end[0] - begin[0]
+            column_distance = end[1] - begin[1]
+            row_deck = []
+            column_deck = []
+            for i in range(1, row_distance):
+                row_deck.append(begin[0] + i)
+            for i in range(1, column_distance):
+                column_deck.append(begin[1] + i)
+            if not row_deck:
+                row_deck = [begin[0]] * (column_distance - 1)
+            if not column_deck:
+                column_deck = [begin[1]] * (row_distance - 1)
+
+            for i in range(len(row_deck)):
+                self.decks.append(Deck(row_deck[i], column_deck[i]))
+        self.is_drowned = is_drowned
 
-    def get_deck(self, row, column):
-        # Find the corresponding deck in the list
-        pass
+    def get_deck(self, row: int, column: int) -> Deck | None:
+        for deck in self.decks:
+            if deck.row == row and deck.column == column:
+                return deck
 
-    def fire(self, row, column):
-        # Change the `is_alive` status of the deck
-        # And update the `is_drowned` value if it's needed
-        pass
+    def fire(self, row: int, column: int) -> None:
+        deck = self.get_deck(row, column)
+        deck.is_alive = False
+        if not any([deck.is_alive for deck in self.decks]):
+            self.is_drowned = True
 
 
 class Battleship:
-    def __init__(self, ships):
-        # Create a dict `self.field`.
-        # Its keys are tuples - the coordinates of the non-empty cells,
-        # A value for each cell is a reference to the ship
-        # which is located in it
-        pass
-
-    def fire(self, location: tuple):
-        # This function should check whether the location
-        # is a key in the `self.field`
-        # If it is, then it should check if this cell is the last alive
-        # in the ship or not.
-        pass
+    def __init__(self, ships: list[tuple]) -> None:
+        self.field = {}
+        for ship in ships:
+            ship = Ship(*ship)
+            ship_dict = {(deck.row, deck.column): ship
+                         for deck in ship.decks}
+            self.field.update(ship_dict)
+
+    def fire(self, location: tuple) -> str:
+        if location not in self.field:
+            return "Miss!"
+        self.field[location].fire(*location)
+        if self.field[location].is_drowned is False:
+            return "Hit!"
+        return "Sunk!"
+
+    def print_field(self) -> None:
+        rows = [["~"] * 10 for _ in range(10)]
+        for location, ship in self.field.items():
+            row = location[0]
+            column = location[1]
+            if ship.is_drowned:
+                rows[row][column] = "x"
+            elif not ship.get_deck(*location).is_alive:
+                rows[row][column] = "*"
+            else:
+                rows[row][column] = u"\u25A1"
+        joined_rows = ["    ".join(row) for row in rows]
+        field = "\n".join(joined_rows)
+        print(field)