def AStar(matrix):
# Set up inital condition.
# Ask for all requiered input.
global statesCount
statesCount = 1
"""
matrix = map(int,list("123456780"))
print matrix
matrixWithMoves = createMoves(matrix)
print matrixWithMoves
"""
initialState = State(matrix)
initialState.f = missplacedTitles(matrix)
if initialState.isGoal():
return initialState
frontier = PriorityQueue()
explored = {}
frontier.enqueue(initialState)
while frontier:
state = frontier.dequeue()
explored[state.to_string()] = 1
if state.isGoal():
return state
children = createStatesMissplaced(state)
for child in children:
if child.to_string() in explored:
continue
if child not in frontier:
frontier.enqueue(child)
statesCount += 1
else:
ch = frontier.__getitem__(child)
if ch.f > child.f:
frontier.__delitem__(child)
frontier.enqueue(child)
# ts = frontier.__getitem__(child)
return None
def AStar(matrix):
# Set up inital condition.
# Ask for all requiered input.
global statesCount
"""
matrix = map(int,list("123456780"))
print matrix
test = map(int, list("704512836"))
matrixWithMoves = createMoves(matrix)
print test
"""
initialState = State(matrix)
initialState.f = manhathanDistance(matrix)
if initialState.isGoal():
return initialState
frontier = PriorityQueue()
explored = {}
frontier.enqueue(initialState)
statesCount = 1
while frontier:
state = frontier.dequeue()
# print state.to_string() + " " + str(state.f)
explored[state.to_string()] = 1
if state.isGoal():
return state
children = createStatesManhatan(state)
for child in children:
if child.to_string() in explored:
continue
if child not in frontier:
frontier.enqueue(child)
statesCount += 1
else:
ch = frontier.__getitem__(child)
if ch.f > child.f:
# print child.to_string() + " " + str(ch.f) + " " + str(child.f)
frontier.__delitem__(child)
frontier.enqueue(child)
ts = frontier.__getitem__(child)
return None
def AStar():
# Set up inital condition.
# Ask for all requiered input.
matrix = list("123456780")
randmatrix = []
for i in range(len(matrix)):
index = randint(0, len(matrix)-1)
randmatrix.append(int(matrix.pop(index)))
print randmatrix
matrixWithMoves = createMoves(randmatrix)
print matrixWithMoves
initialState = State(matrixWithMoves)
initialState.f = manhathanDistance(matrixWithMoves)
if initialState.isGoal():
return initialState
frontier = PriorityQueue()
"""
A set is an unordered data type with no repited elements.
It is use for easy comparision of membership
"""
explored = {}
frontier.enqueue(initialState)
count = 1
while frontier:
"""
count += 1
if count == 5:
break
"""
state = frontier.dequeue()
#print state.to_string() + " " + str(state.f)
explored[state.to_string()] = 1
if state.isGoal():
return state
children = createStatesManhatan(state)
for child in children:
if child.to_string() in explored:
continue
if child not in frontier:
frontier.enqueue(child)
#elif frontier.__getitem__(child).g > child.g:
# continue
else:
ch = frontier.__getitem__(child)
if ch.f > child.f:
#print child.to_string() + " " + str(ch.f) + " " + str(child.f)
frontier.__delitem__(child)
frontier.enqueue(child)
ts = frontier.__getitem__(child)
"""
if (child.to_string() not in explored) and (child not in frontier):
frontier.enqueue(child)
elif child.to_string() in explored:
continue
elif child in frontier:
ch = frontier.__getitem__(child)
if ch.f > child.f:
#print child.to_string() + " " + str(ch.f) + " " + str(child.f)
frontier.__delitem__(child)
frontier.enqueue(child)
ts = frontier.__getitem__(child)
#print ts.to_string() + "---" + str(ts.f)
"""
"""
while frontier:
x = frontier.dequeue()
print x.to_string() + " " + str(x.f)
"""
"""
