Will upvote Please fix the following code and post your inputs and outputs please run your code to make sure it works import sys import heapq import copy class PriorityQueue(): def __init__(self): self.thisQueue = [] def push(self, thisNode): heapq.heappush(self.thisQueue, (thisNode.val, -thisNode.id, thisNode)) def pop(self): return heapq.heappop(self.thisQueue)[2] def isEmpty(self): return len(self.thisQueue) == 0 def length(self): return len(self.thisQueue) class Set(): def __init__(self): self.thisSet = set() def add(self, entry): if entry is not None: self.thisSet.add(entry.__hash__()) def length(self): return len(self.thisSet) def isMember(self, query): return query.__hash__() in self.thisSet class Node(): def __init__(self, val, startstate, endstate, depth): global nodeid self.id = nodeid nodeid += 1 self.val = val self.state = startstate self.endstate = endstate self.depth = depth def __str__(self): return 'Node: id=%d val=%d' % (self.id, self.val) def expand(current_node, closedlist, goal_state): closedlist.add(current_node.state) successors = [] up_child = current_node.state.up() down_child = current_node.state.down() right_child = current_node.state.right() left_child = current_node.state.left() children = [left_child, right_child, up_child, down_child] for child in children: if child is not None and not closedlist.isMember(child): s = Node(0, child, None, current_node.depth + 1) s.parent_node = current_node if child == left_child: s.action = "left" elif child == right_child: s.action = "right" elif child == up_child: s.action = "up" elif child == down_child: s.action = "down" successors.append(s) return successors def h0(currenttiles, stiles): misplaced = 0 for i in range(len(stiles)): for j in range(len(currenttiles)): if stiles[i][j] != currenttiles[i][j]: misplaced += 1 return misplaced def manhattan(currenttiles, stiles): total = 0 for i in range(len(stiles)): for j in range(len(currenttiles)): if stiles[i][j] != currenttiles[i][j]: y = stiles[i][j] a = i b = j for k in range(len(stiles)): for l in range(len(stiles)): if currenttiles[k][l] == y: d = k e = l count = (abs(d - a) + abs(e - b)) total += count return total class State(): def __init__(self): self.xpos = 0 self.ypos = 0 self.tiles = [[0, 1, 2], [3, 4, 5], [6, 7, 8]] def left(self): if self.ypos == 0: return None s = self.copy() s.tiles[s.xpos][s.ypos] = s.tiles[s.xpos][s.ypos - 1] s.ypos -= 1 s.tiles[s.xpos][s.ypos] = 0 return s def right(self): if self.ypos == 2: return None s = self.copy() s.tiles[s.xpos][s.ypos] = s.tiles[s.xpos][s.ypos + 1] s.ypos += 1 s.tiles[s.xpos][s.ypos] = 0 return s def up(self): if self.xpos == 0: return None s = self.copy() s.tiles[s.xpos][s.ypos] = s.tiles[s.xpos - 1][s.ypos] s.xpos -= 1 s.tiles[s.xpos][s.ypos] = 0 return s def down(self): if self.xpos == 2: return None s = self.copy() s.tiles[s.xpos][s.ypos] = s.tiles[s.xpos + 1][s.ypos] s.xpos += 1 s.tiles[s.xpos][s.ypos] = 0 return s def __hash__(self): return (tuple(self.tiles[0]), t.

1. Will upvote Please fix the following code and post your inputs and outputs please run your code
to make sure it works
import sys
import heapq
import copy
class PriorityQueue():
def __init__(self):
self.thisQueue = []
def push(self, thisNode):
heapq.heappush(self.thisQueue, (thisNode.val, -thisNode.id, thisNode))
def pop(self):
return heapq.heappop(self.thisQueue)[2]
def isEmpty(self):
return len(self.thisQueue) == 0
def length(self):
return len(self.thisQueue)
class Set():
def __init__(self):
self.thisSet = set()
def add(self, entry):
if entry is not None:
self.thisSet.add(entry.__hash__())
def length(self):
return len(self.thisSet)
def isMember(self, query):
return query.__hash__() in self.thisSet

2. class Node():
def __init__(self, val, startstate, endstate, depth):
global nodeid
self.id = nodeid
nodeid += 1
self.val = val
self.state = startstate
self.endstate = endstate
self.depth = depth
def __str__(self):
return 'Node: id=%d val=%d' % (self.id, self.val)
def expand(current_node, closedlist, goal_state):
closedlist.add(current_node.state)
successors = []
up_child = current_node.state.up()
down_child = current_node.state.down()
right_child = current_node.state.right()
left_child = current_node.state.left()
children = [left_child, right_child, up_child, down_child]
for child in children:
if child is not None and not closedlist.isMember(child):
s = Node(0, child, None, current_node.depth + 1)
s.parent_node = current_node
if child == left_child:
s.action = "left"
elif child == right_child:
s.action = "right"
elif child == up_child:
s.action = "up"
elif child == down_child:
s.action = "down"
successors.append(s)

3. return successors
def h0(currenttiles, stiles):
misplaced = 0
for i in range(len(stiles)):
for j in range(len(currenttiles)):
if stiles[i][j] != currenttiles[i][j]:
misplaced += 1
return misplaced
def manhattan(currenttiles, stiles):
total = 0
for i in range(len(stiles)):
for j in range(len(currenttiles)):
if stiles[i][j] != currenttiles[i][j]:
y = stiles[i][j]
a = i
b = j
for k in range(len(stiles)):
for l in range(len(stiles)):
if currenttiles[k][l] == y:
d = k
e = l
count = (abs(d - a) + abs(e - b))
total += count
return total
class State():
def __init__(self):
self.xpos = 0
self.ypos = 0
self.tiles = [[0, 1, 2], [3, 4, 5], [6, 7, 8]]
def left(self):
if self.ypos == 0:
return None

4. s = self.copy()
s.tiles[s.xpos][s.ypos] = s.tiles[s.xpos][s.ypos - 1]
s.ypos -= 1
s.tiles[s.xpos][s.ypos] = 0
return s
def right(self):
if self.ypos == 2:
return None
s = self.copy()
s.tiles[s.xpos][s.ypos] = s.tiles[s.xpos][s.ypos + 1]
s.ypos += 1
s.tiles[s.xpos][s.ypos] = 0
return s
def up(self):
if self.xpos == 0:
return None
s = self.copy()
s.tiles[s.xpos][s.ypos] = s.tiles[s.xpos - 1][s.ypos]
s.xpos -= 1
s.tiles[s.xpos][s.ypos] = 0
return s
def down(self):
if self.xpos == 2:
return None
s = self.copy()
s.tiles[s.xpos][s.ypos] = s.tiles[s.xpos + 1][s.ypos]
s.xpos += 1
s.tiles[s.xpos][s.ypos] = 0
return s
def __hash__(self):
return (tuple(self.tiles[0]), tuple(self.tiles[1]), tuple(self.tiles[2]))

5. def __str__(self):
return '%d %d %dn%d %d %dn%d %d %dn' % (
self.tiles[0][0], self.tiles[0][1], self.tiles[0][2],
self.tiles[1][0], self.tiles[1][1], self.tiles[1][2],
self.tiles[2][0], self.tiles[2][1], self.tiles[2][2])
def copy(self):
s = State()
s.xpos = self.xpos
s.ypos = self.ypos
s.tiles = [row[:] for row in self.tiles]
return s
def astar(initial_state, goal_state, closedlist, heuristic_type):
initial_node = Node(0, initial_state, goal_state, 0)
print(initial_node.val)
frontier = PriorityQueue()
frontier.push(initial_node)
V = 0
N = 0
d = 0
while not frontier.isEmpty():
if frontier.length() > N:
N = frontier.length()
current_node = frontier.pop()
V += 1
if current_node.state == goal_state:
d = current_node.depth # Found the solution
return current_node, V, N, d
expanded = expand(current_node, closedlist, goal_state)
for node in expanded:
if heuristic_type == 0:
f_val = h0(node.state.tiles, goal_state.tiles) + node.depth
elif heuristic_type == 1:

6. f_val = manhattan(node.state.tiles, goal_state.tiles) + node.depth
node.val = f_val
frontier.push(node)
return None, V, N, d
def main():
global nodeid
nodeid = 0
inputs = []
for line in sys.stdin:
inputs += line.split()
array = [
[int(inputs[0]), int(inputs[1]), int(inputs[2])],
[int(inputs[3]), int(inputs[4]), int(inputs[5])],
[int(inputs[6]), int(inputs[7]), int(inputs[8])]
]
goal_state = State()
goal_state.tiles = [[0, 1, 2], [3, 4, 5], [6, 7, 8]]
s = State()
current = State()
current.tiles = array
s.tiles = [[0, 1, 2], [3, 4, 5], [6, 7, 8]]
print(array)
printMan = manhattan(array, goal_state.tiles)
print("Initial State:")
print(s)
print("Goal State:")
print(goal_state)
print("Manhattan Distance:", printMan)
for heuristic_type in range(2):
closedlist = Set()
nodeid = 0

7. d, N, V, _ = astar(current, goal_state, closedlist, heuristic_type)
print("nHeuristic", heuristic_type)
print("Nodes Visited/Expanded (V):", V)
print("Maximum Nodes Stored in Memory (N):", N)
print("Depth of Optimal
Solution
(d):", d)
if __name__ == "__main__":
main()