Question
PLEASE HELP WITH ARTIFICIAL INTELLIGENCE IN PYTHON. PLEASE DO A HUGE FAVOR BY SOLVING SEARCH.PY, I'LL DEFINETELY UPVOTE IF THE SOLUTION FOR SEARCH.PY IS CORRECT!!!
PLEASE HELP WITH ARTIFICIAL INTELLIGENCE IN PYTHON. PLEASE DO A HUGE FAVOR BY SOLVING SEARCH.PY, I'LL DEFINETELY UPVOTE IF THE SOLUTION FOR SEARCH.PY IS CORRECT!!!
The project involves Search Algorithms, in particular, Breadth-First, Depth-First, and A-Star. It involves a program that simulates a puzzle called an N-Puzzle: https://en.wikipedia.org/wiki/15_puzzle In our version, the blank space is in the bottom right in the solution and we are working on 3x3 puzzles Files: main.py A driver (test file) used to run your code (All Algorithms) on all the examples. I have given you 3 examples, and will graded your code against these 3, as well as several others (of similar size) search.py A file with 4 algorithms that you will write as your assignment, BFS, DFS, and 2 A-Stars. A shell has been included for each. Be sure to return the correct expected values. Example: Input File: 0 2 3 1 5 6 4 7 8 Input to search function puzzle = [[0, 2, 3], [1, 5, 6], [4, 7, 8]] Expected Output [UP, UP, LEFT, LEFT], using the ENUMS defined in search.py Running: python3 main.py Implement Breadth First Search, Depth First Search, A-Star with the heuristic: # of misplaced tiles A-Star with the heuristic: Sum of Manhattan Distance of each tile from correct position.
Notes: 0 represents the empty space Ties should be broken in the order: UP DOWN LEFT RIGHT The goal state has the 0 in the bottom right Be sure to submit clean, working code.
Main.py (Please don't change)
from search import BFS, DFS, A_Star_H1, A_Star_H2, UP, DOWN, LEFT, RIGHT
def get_move_string(moves):
"""
Helper function to print moves.
"""
move_string = ""
if len(moves) == 0:
return "NONE"
for move in moves:
if move == UP:
move_string = move_string + "U "
elif move == LEFT:
move_string = move_string + "L "
elif move == DOWN:
move_string = move_string + "D "
elif move == RIGHT:
move_string = move_string + "R "
else:
move_string = move_string + "INVALID "
return move_string
def read_puzzle(filename):
"""
Helper to read a puzzle from a file.
Arguments:
filename: Name of file to read from.
"""
puzzle = []
with open(filename, "r") as f:
for line in f.readlines():
puzzle.append(line.split(' '))
return puzzle
def run_test(size, filename):
"""
Takes a filename,
then creates a puzzle,
reads it in from file,
and runs each of the search algorithms
"""
print(f"{filename}:")
puzzle = read_puzzle(filename)
moves = BFS(puzzle)
print(" BFS | " + get_move_string(moves))
puzzle = read_puzzle(filename)
moves = DFS(puzzle)
print(" DFS | " + get_move_string(moves))
puzzle = read_puzzle(filename)
moves = A_Star_H1(puzzle)
print(" A* H1 | " + get_move_string(moves))
puzzle = read_puzzle(filename)
moves = A_Star_H2(puzzle)
print(" A* H2 | " + get_move_string(moves))
print("-" * 20)
run_test(3, 'test_data/ex1.txt')
run_test(3, 'test_data/ex2.txt')
run_test(3, 'test_data/ex3.txt')
Search.py (Please solve this)
# ENUMS
UP = 0
LEFT = 1
DOWN = 2
RIGHT = 3
def BFS(puzzle):
"""
Breadth-First Search.
Arguments:
- puzzle: Node object representing initial state of the puzzle
Return:
final_solution: An ordered list of moves representing the final solution.
"""
final_solution = []
# TODO: WRITE CODE
return final_solution
def DFS(puzzle):
"""
Depth-First Search.
Arguments:
- puzzle: Node object representing initial state of the puzzle
Return:
final_solution: An ordered list of moves representing the final solution.
"""
final_solution = []
# TODO: WRITE CODE
return final_solution
def A_Star_H1(puzzle):
"""
A-Star with Heuristic 1
Arguments:
- puzzle: Node object representing initial state of the puzzle
Return:
final_solution: An ordered list of moves representing the final solution.
"""
final_solution = []
# TODO: WRITE CODE
return final_solution
def A_Star_H2(puzzle):
"""
A-Star with Heauristic 2
Arguments:
- puzzle: Node object representing initial state of the puzzle
Return:
final_solution: An ordered list of moves representing the final solution.
"""
final_solution = []
# TODO: WRITE CODE
return final_solution
ex1.txt
0 2 3 1 5 6 4 7 8
ex2.txt
1 2 0 8 5 3 4 7 6
ex3.txt
4 1 3 7 2 5 8 6 0
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started