Python MinPQ Exemples

Exemple #1

    def __init__(self, board):
        self.pq = MinPQ()
        self.goal = None

        self.pq.insert(self._Node(board))

        while True:
            node = self.pq.delMin()

            if node.board.goal():
                self.goal = node
                break
            for neighbor in node.board.neighbors():
                n = self._Node(neighbor, node.moves + 1, node)
                if not node.prev is None:
                    if neighbor != node.board:
                        self.pq.insert(n)
                else:
                    self.pq.insert(n)

Exemple #2

Fichier : solver.py Projet : deadmau915/Npuzzle

	def __init__(self, board):
		self.pq = MinPQ()
		self.goal = None

		self.pq.insert(self._Node(board))

		while True:
			node = self.pq.delMin()

			if node.board.goal():
				self.goal = node
				break
			for neighbor in node.board.neighbors():
				n = self._Node(neighbor, node.moves + 1, node)
				if not node.prev is None:
					if neighbor != node.board:
						self.pq.insert(n)
				else:
					self.pq.insert(n)

Exemple #3

Fichier : solver.py Projet : deadmau915/Npuzzle

class Solver(object):

	class _Node(object):

		def __init__(self, board, moves = 0, prev = None):
			self.board = board
			self.moves = moves
			self.prev  = prev

		def priority(self):
			return self.board.manhattan() + self.moves

		def __cmp__(self, other):
			return self.priority() - other.priority()

	def __init__(self, board):
		self.pq = MinPQ()
		self.goal = None

		self.pq.insert(self._Node(board))

		while True:
			node = self.pq.delMin()

			if node.board.goal():
				self.goal = node
				break
			for neighbor in node.board.neighbors():
				n = self._Node(neighbor, node.moves + 1, node)
				if not node.prev is None:
					if neighbor != node.board:
						self.pq.insert(n)
				else:
					self.pq.insert(n)

	def moves(self):
		return self.goal.moves if not self.goal is None else -1

	def solution(self):
		stck = Stack()
		node = self.goal
		while not node is None:
			stck.push(node.board)
			node = node.prev
		return stck

Exemple #4

class Solver(object):
    class _Node(object):
        def __init__(self, board, moves=0, prev=None):
            self.board = board
            self.moves = moves
            self.prev = prev

        def priority(self):
            return self.board.manhattan() + self.moves

        def __cmp__(self, other):
            return self.priority() - other.priority()

    def __init__(self, board):
        self.pq = MinPQ()
        self.goal = None

        self.pq.insert(self._Node(board))

        while True:
            node = self.pq.delMin()

            if node.board.goal():
                self.goal = node
                break
            for neighbor in node.board.neighbors():
                n = self._Node(neighbor, node.moves + 1, node)
                if not node.prev is None:
                    if neighbor != node.board:
                        self.pq.insert(n)
                else:
                    self.pq.insert(n)

    def moves(self):
        return self.goal.moves if not self.goal is None else -1

    def solution(self):
        stck = Stack()
        node = self.goal
        while not node is None:
            stck.push(node.board)
            node = node.prev
        return stck