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stepushovgs:main
stepushovgs:lab2-pure
stepushovgs:lab2
stepushovgs:stepushovgs
stepushovgs:develop
stepushovgs:lab1
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UNN:main
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compare: stepushovgs:ef877978d2e4151dd16b0d94fbb92867385e0db9
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stepushovgs:lab2-pure
stepushovgs:lab2
stepushovgs:stepushovgs
stepushovgs:develop
stepushovgs:lab1
stepushovgs:main
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UNN:main

2 Commits
1224a5afee ... ef877978d2

Author SHA1 Message Date
GordStep
ef877978d2 Реализация алгоритма A* 2026-05-22 22:27:49 +03:00
GordStep
e54b6c0a7e исправление метода name 2026-05-22 22:10:16 +03:00
5 changed files with 235 additions and 70 deletions
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9
stepushovgs/labyrinth/mazes/tests/test_lab3.txt Normal file
View File

@ -0,0 +1,9 @@
####################
#S #
# ########## #
# #### #
# ######## #
# #
# ####### #### #
# E #
####################

1
stepushovgs/labyrinth/source/strategy/BFS.py
View File

@ -5,6 +5,7 @@ from source.strategy import PathFindingStrategy, reconstruct_path
from source.classes import Maze, Cell
class BFS(PathFindingStrategy):
@property
def name(self):
"""Возвращает название метода"""
return "BFS"

64
stepushovgs/labyrinth/source/strategy/astar.py
View File

@ -1,10 +1,64 @@
from source.strategy import PathFindingStrategy
from heapq import *
from source.strategy import PathFindingStrategy, reconstruct_path
from source.classes import Maze, Cell
class AStar(PathFindingStrategy):
def findPath(self, maze: Maze, start: Cell, exit: Cell):
pass
@property
def name(self) -> str:
return "A*"
def heuristic(self, a: Cell, b: Cell) -> int:
x1, y1 = a.getXY()
x2, y2 = b.getXY()
def __A__(self, maze: Maze, start: Cell, exit: Cell):
pass
return abs(x1 - x2) + abs(y1 - y2)
def findPath(self, maze: Maze):
start_cell = maze.start
exit_cell = maze.exit
queue = []
counter = 0 # счётчик для уникальности, чтобы не сравнивать клетки
start_h = self.heuristic(start_cell, exit_cell)
heappush(queue, (start_h, counter, start_cell))
counter += 1
cost_visited = {start_cell.getXY(): 0}
came_from = {start_cell.getXY(): None}
visited_count = 1
while queue:
current_cost, _, current_cell = heappop(queue)
current_g = cost_visited[current_cell.getXY()]
if current_cell.getXY() == exit_cell.getXY():
return reconstruct_path(
came_from=came_from,
start=start_cell,
end=current_cell
), visited_count
next_cells = maze.getNeighbors(current_cell)
for next_cell in next_cells:
neighbor_cost = next_cell.value
neighbor_cell_xy = next_cell.getXY()
new_cost = current_g + neighbor_cost
if neighbor_cell_xy not in cost_visited or new_cost < cost_visited[neighbor_cell_xy]:
priority = new_cost + self.heuristic(next_cell, exit_cell)
heappush(queue, (priority, counter, next_cell))
counter += 1
cost_visited[neighbor_cell_xy] = new_cost
came_from[neighbor_cell_xy] = current_cell
visited_count += 1
return [], visited_count

8
stepushovgs/labyrinth/source/strategy/maze_solver.py
View File

@ -12,7 +12,7 @@ class MazeSolver:
self.strategy = strategy
self.observer = observer
def strategyName(self):
def strategyName(self) -> str:
return self.strategy.name
def setStrategy(self, strategy: PathFindingStrategy):
@ -45,4 +45,8 @@ class SearchStats:
self.timeMs = timeMs
self.visitedCells = visitedCells
self.pathLength = pathLength
self.path = path
self.path = path
def show(self):
"""Вывод информации о тесте в консоль"""
print(f'time: {self.timeMs} ms\nvisited cells: {self.visitedCells}\npath length: {self.pathLength}')

223
stepushovgs/labyrinth/test.ipynb
View File

@ -2,14 +2,14 @@
"cells": [
{
"cell_type": "code",
"execution_count": 12,
"execution_count": 15,
"id": "4dbe48b6",
"metadata": {},
"outputs": [],
"source": [
"from source.builder import TextFileMazeBuilder\n",
"from source.observer import ConsoleView, Event\n",
"from source.strategy import MazeSolver, BFS, DFS\n",
"from source.strategy import MazeSolver, BFS, DFS, Dijkstra, AStar\n",
"# from source.strategy.maze_solver import \n",
"from source.classes import Cell\n",
"# from source.strategy import "
@ -17,19 +17,20 @@
},
{
"cell_type": "code",
"execution_count": 13,
"execution_count": null,
"id": "007bf97a",
"metadata": {},
"outputs": [],
"source": [
"test_lab = './mazes/tests/test_lab.txt'\n",
"test_lab2 = './mazes/tests/test_lab2.txt'\n",
"test_lab3 = './mazes/tests/test_lab20x20.txt'"
"test_lab3 = './mazes/tests/test_lab3.txt'\n",
"test_lab4 = './mazes/tests/test_lab20x20.txt'"
]
},
{
"cell_type": "code",
"execution_count": 14,
"execution_count": 17,
"id": "4489fc7e",
"metadata": {},
"outputs": [
@ -55,7 +56,7 @@
},
{
"cell_type": "code",
"execution_count": 15,
"execution_count": 18,
"id": "fde1eddb",
"metadata": {},
"outputs": [
@ -83,7 +84,7 @@
},
{
"cell_type": "code",
"execution_count": 16,
"execution_count": 19,
"id": "22325f68",
"metadata": {},
"outputs": [
@ -116,7 +117,7 @@
},
{
"cell_type": "code",
"execution_count": 17,
"execution_count": 20,
"id": "19840429",
"metadata": {},
"outputs": [
@ -154,7 +155,7 @@
" (7, 1)])"
]
},
"execution_count": 17,
"execution_count": 20,
"metadata": {},
"output_type": "execute_result"
}
@ -168,7 +169,7 @@
},
{
"cell_type": "code",
"execution_count": 18,
"execution_count": 21,
"id": "73ba37a8",
"metadata": {},
"outputs": [
@ -206,7 +207,7 @@
" (7, 1)])"
]
},
"execution_count": 18,
"execution_count": 21,
"metadata": {},
"output_type": "execute_result"
}
@ -220,7 +221,7 @@
},
{
"cell_type": "code",
"execution_count": 19,
"execution_count": 22,
"id": "857c5c04",
"metadata": {},
"outputs": [
@ -230,10 +231,9 @@
"text": [
"0\n",
"1\n",
"3\n",
"4\n",
"2\n",
"3\n",
"3\n",
"2\n"
]
},
@ -243,7 +243,7 @@
"{'0', '1', '2', '3', '4'}"
]
},
"execution_count": 19,
"execution_count": 22,
"metadata": {},
"output_type": "execute_result"
}
@ -272,7 +272,7 @@
},
{
"cell_type": "code",
"execution_count": 20,
"execution_count": 23,
"id": "9a5ea5cb",
"metadata": {},
"outputs": [
@ -358,7 +358,7 @@
},
{
"cell_type": "code",
"execution_count": 21,
"execution_count": 24,
"id": "32edf4d1",
"metadata": {},
"outputs": [
@ -383,7 +383,7 @@
},
{
"cell_type": "code",
"execution_count": 22,
"execution_count": 25,
"id": "48d20564",
"metadata": {},
"outputs": [
@ -391,40 +391,37 @@
"name": "stdout",
"output_type": "stream",
"text": [
"BFS\n",
"Путь найден:\n",
"# # # # # # # # # # # # # # # # # # # #\n",
"S. # # # #\n",
"#.# # # # # # # # # # # # #\n",
"#..... # # # # # # # # #\n",
"# #.# # # # # # # # # # # #\n",
"# #............. # # # # #\n",
"# # # # # # #. # # # # # # #\n",
"# # # # #..... # # # # #\n",
"# # # # # # #. # # # # #\n",
"# # # # #. # # # # #\n",
"# # # # # # #. # # # # #\n",
"# # # # #..... # # # #\n",
"# # # # # # # # #. # # # #\n",
"# # # # #. # # #\n",
"# # # # # # # # #. # # # # #\n",
"# # # # # # #. # # # #\n",
"# # # # # # #. # # # #\n",
"# # # # # # #. # # # #\n",
"# # # #...........E #\n",
"# # # # # # # # # # # # # # # # # # # #\n"
"#####################################\n",
"#S #\n",
"#. #\n",
"#. #\n",
"#. #\n",
"#. #\n",
"#. #\n",
"#. #\n",
"#. #\n",
"#..................................E#\n",
"#####################################\n",
"time: 0.0008461000002171204 ms\n",
"visited cells: 315\n",
"path length: 43\n"
]
}
],
"source": [
"maze2 = builder.buildFromFile(test_lab3)\n",
"maze2 = builder.buildFromFile(test_lab2)\n",
"\n",
"solver = MazeSolver(maze2, BFS(), ConsoleView())\n",
"stats = solver.solve()"
"print(solver.strategyName())\n",
"stats = solver.solve()\n",
"stats.show()"
]
},
{
"cell_type": "code",
"execution_count": 23,
"execution_count": 26,
"id": "bf13d5ba",
"metadata": {},
"outputs": [
@ -432,27 +429,31 @@
"name": "stdout",
"output_type": "stream",
"text": [
"DFS\n",
"Путь найден:\n",
"# # # # # # # # # # # # # # # # # # # #\n",
"S.......# # # #\n",
"# # # .# # # # # # # # # # #\n",
"#.......# # # # # # # # #\n",
"#. # # # # # # # # # # # # #\n",
"#...# ...........# # # # #\n",
"# .# # #. # # # .# # # # # # #\n",
"#...# #...# # .....# # # # #\n",
"#. # # .# # # # .# # # # #\n",
"#...# #...# #...# # # # #\n",
"# .# #. # # # #. # # # # #\n",
"#...# #..... # #.......# # # #\n",
"#. # # # #...# # # # .# # # #\n",
"#...#.......# .# #...# # #\n",
"# .#.# # .#...# # # #. # # # # #\n",
"#...#. #...#. # # #...# # # #\n",
"#. #...#. #...# # # .# # # #\n",
"#...# .#...# .# # # .# # # #\n",
"# .....# .....# # .........E #\n",
"# # # # # # # # # # # # # # # # # # # #\n"
"####################\n",
"S...# # # #\n",
"###.# ### # ### # ##\n",
"#...# # # # # # # ##\n",
"#.### # ### # ### ##\n",
"#.# .....# # # ##\n",
"#.###.###.### # # ##\n",
"#.# #.# #...# # # ##\n",
"#.# #.# ###.# # # ##\n",
"#.# #.# #.# # # ##\n",
"#.# #.### #.# # # ##\n",
"#.# #...# #...# # ##\n",
"#.# ###.# ###.# # ##\n",
"#.# #.# #.# ##\n",
"#.### #.### #.### ##\n",
"#.#...#.# # #.# # ##\n",
"#.#.#.#.# # #.# # ##\n",
"#.#.#.#.# # #.# # ##\n",
"#...#...# #.....E#\n",
"####################\n",
"time: 0.00014700000019729487 ms\n",
"visited cells: 83\n",
"path length: 76\n"
]
}
],
@ -460,13 +461,109 @@
"maze2 = builder.buildFromFile(test_lab3)\n",
"\n",
"solver = MazeSolver(maze2, DFS(), ConsoleView())\n",
"stats = solver.solve()"
"print(solver.strategyName())\n",
"stats = solver.solve()\n",
"stats.show()"
]
},
{
"cell_type": "code",
"execution_count": 27,
"id": "9383cb75",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Dijkstra\n",
"Путь найден:\n",
"####################\n",
"S...# # # #\n",
"###.# ### # ### # ##\n",
"#...# # # # # # # ##\n",
"#.### # ### # ### ##\n",
"#.# .....# # # ##\n",
"#.###.###.### # # ##\n",
"#.# #.# #...# # # ##\n",
"#.# #.# ###.# # # ##\n",
"#.# #.# #.# # # ##\n",
"#.# #.### #.# # # ##\n",
"#.# #...# #...# # ##\n",
"#.# ###.# ###.# # ##\n",
"#.# #.# #.# ##\n",
"#.### #.### #.### ##\n",
"#.#...#.# # #.# # ##\n",
"#.#.#.#.# # #.# # ##\n",
"#.#.#.#.# # #.# # ##\n",
"#...#...# #.....E#\n",
"####################\n",
"time: 0.00022080000007917988 ms\n",
"visited cells: 120\n",
"path length: 76\n"
]
}
],
"source": [
"maze2 = builder.buildFromFile(test_lab3)\n",
"\n",
"solver = MazeSolver(maze2, Dijkstra(), ConsoleView())\n",
"print(solver.strategyName())\n",
"stats = solver.solve()\n",
"stats.show()"
]
},
{
"cell_type": "code",
"execution_count": 28,
"id": "835cff61",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"A*\n",
"Путь найден:\n",
"####################\n",
"S...# # # #\n",
"###.# ### # ### # ##\n",
"#...# # # # # # # ##\n",
"#.### # ### # ### ##\n",
"#.# .....# # # ##\n",
"#.###.###.### # # ##\n",
"#.# #.# #...# # # ##\n",
"#.# #.# ###.# # # ##\n",
"#.# #.# #.# # # ##\n",
"#.# #.### #.# # # ##\n",
"#.# #...# #...# # ##\n",
"#.# ###.# ###.# # ##\n",
"#.# #.# #.# ##\n",
"#.### #.### #.### ##\n",
"#.#...#.# # #.# # ##\n",
"#.#.#.#.# # #.# # ##\n",
"#.#.#.#.# # #.# # ##\n",
"#...#...# #.....E#\n",
"####################\n",
"time: 0.00025749999986146577 ms\n",
"visited cells: 92\n",
"path length: 76\n"
]
}
],
"source": [
"maze2 = builder.buildFromFile(test_lab3)\n",
"\n",
"solver = MazeSolver(maze2, AStar(), ConsoleView())\n",
"print(solver.strategyName())\n",
"stats = solver.solve()\n",
"stats.show()"
]
},
{
"cell_type": "code",
"execution_count": null,
"id": "9383cb75",
"id": "2d84a151",
"metadata": {},
"outputs": [],
"source": []