class ComputePath:
def __init__(self, mylist, start, end):
#pass into a list of grocery location (with each element in tuple of x and y coordinates)
#start: entrance; end: check-out, both in tuple
self.distance=Graph()
self.curMin=1000
self.trackOrder=[]
self.trackPath=[start]
self.minPath([start], 0,start,mylist,end, self.trackPath)
print("test3")
print("length of path is "+str(self.curMin))
self.iterateOrder()
self.distance.paintPath(self.trackPath)
print("my path is ")
print(self.trackPath)
self.start=start
self.end=end
self.mylist=mylist
def minPath(self, trackOrder, curDis, lastPop, mylist, end, trackPath):
#compute the min BFS path of passing all location in mylist; O(n!)
if len(mylist)==0:
curDis+=self.distance.bfs(lastPop,end)
trackOrder.append(end)
trackPath.append((self.distance.getItrPath()))
if (curDis<=self.curMin):
self.curMin=curDis
self.trackOrder=trackOrder
self.trackPath=trackPath
return
else:
for index in range(len(mylist)):
self.minPath(trackOrder+[mylist[index]], curDis+self.distance.bfs(lastPop, mylist[index]), self.distance.get_lastPop(), mylist[:index]+mylist[index+1:], end, trackPath+self.distance.getItrPath())
def iterateOrder(self):
mypath=""
for ele in self.trackOrder:
mypath+=str(ele)+" "
print("order of shopping is: "+mypath)
def redraw(self,new_row, new_col):
self.distance.set_graph(new_row,new_col)
self.curMin=1000
self.trackOrder=[]
self.trackPath=[self.start]
self.minPath([self.start], 0,self.start,self.mylist,self.end, self.trackPath)
print("length of path is "+str(self.curMin))
self.iterateOrder()
self.distance.paintPath(self.trackPath)
print("my path is ")
print(self.trackPath)
def get_para(self):
return self.distance.get_para()
def get_trackPath(self):
return self.trackPath
def gen_shimmer(n: int):
nodes = [Node(x) for x in range(n)] # start with 1
nodes_dict = {}
for node in nodes:
nodes_dict[node.id] = node
finished_nodes = []
for x in range(n - 10):
x = x
node = nodes_dict[x]
for i in range(4 - node.num_in()):
added = 0
nid = 0
while added != 1:
added, nid = node.add_in(random.choice(list(
nodes_dict.keys())))
nodes_dict[nid].add_out(node.id)
for i in range(4 - node.num_out()):
added = 0
nid = 0
while added != 1:
added, nid = node.add_out(
random.choice(list(nodes_dict.keys())))
nodes_dict[nid].add_in(node.id)
finished_nodes.append(node)
del nodes_dict[node.id]
edges = []
nodes_ = []
for node in finished_nodes:
for in_ in node.inn:
if not (node.id, in_) in edges:
edges.append((node.id, in_))
for out in node.out:
if not (out, node.id) in edges:
edges.append((out, node.id))
nodes_.append(node.id)
g = Graph()
for edge in edges:
g.addEdge(edge[0], edge[1])
bfs_ordered = []
g.BFS(0, bfs_ordered)
result = Result([x.id for x in nodes], edges)
return result
def test_two_components(self):
adj_matrix = [
'5\n', '0 1 1 0 0', '1 0 1 0 0', '1 1 0 0 0', '0 0 0 0 1',
'0 0 0 1 0'
]
graph = Graph.get_from_adjective_matrix(adj_matrix)
components = graph.find_component()
self.assertEqual({1: {0, 1, 2}, 2: {3, 4}}, components)
def challenge_2():
from_vert = sys.argv[2]
to_vert = sys.argv[3]
vertex_list = []
edges = []
counter = 0
with open(sys.argv[1], 'r') as f:
#graph_data = f.readlines()
for line in f:
x = line.strip('()\n').split(',')
# counter at 1 indicates the input list or the vert list
if counter == 1:
vertex_list = x
counter += 1
# counter > 2 indicates the edges
if counter > 2:
edges.append(x)
g = Graph()
for vertex in vertex_list:
g.add_vertex(vertex)
for edge in edges:
# print(edge)
g.add_edge(edge[0], edge[1])
# print('{} {}'.format(from_vert, to_vert))
print(g.bfs(from_vert, to_vert))
def __init__(self, mylist, start, end):
#pass into a list of grocery location (with each element in tuple of x and y coordinates)
#start: entrance; end: check-out, both in tuple
self.distance=Graph()
self.curMin=1000
self.trackOrder=[]
self.trackPath=[start]
self.minPath([start], 0,start,mylist,end, self.trackPath)
print("test3")
print("length of path is "+str(self.curMin))
self.iterateOrder()
self.distance.paintPath(self.trackPath)
print("my path is ")
print(self.trackPath)
self.start=start
self.end=end
self.mylist=mylist
def test_bfs_ssp(self):
graph = Graph()
a = Vertex(1)
b = Vertex(2)
c = Vertex(3)
d = Vertex(4)
e = Vertex(5)
graph.add_vertex(a)
graph.add_vertex(b)
graph.add_vertex(c)
graph.add_vertex(d)
graph.add_vertex(e)
graph.add_edge(a, b)
graph.add_edge(a, d)
graph.add_edge(b, c)
graph.add_edge(b, e)
graph.add_edge(c, e)
assert graph.bfs(a, e) == [1, 2, 5]
def test_one_component(self):
adj_matrix = ['4\n', '0 1 1 0', '1 0 1 0', '1 1 0 1', '0 0 1 0']
graph = Graph.get_from_adjective_matrix(adj_matrix)
components = graph.find_component()
self.assertEqual({1: {0, 1, 2, 3}}, components)
def test_loop(self):
adj_matrix = ['3\n', '1 0 0', '0 1 0', '0 0 1']
graph = Graph.get_from_adjective_matrix(adj_matrix)
components = graph.find_component()
self.assertEqual({1: {0}, 2: {1}, 3: {2}}, components)
def test_two_alone_vertexes(self):
adj_matrix = ['4\n', '0 0 0 0', '0 0 1 0', '0 1 0 0', '0 0 0 0']
graph = Graph.get_from_adjective_matrix(adj_matrix)
components = graph.find_component()
self.assertEqual({1: {0}, 2: {1, 2}, 3: {3}}, components)
def test_simple(self):
g = Graph(3)
self.assertEqual(g.find_all_distances(0), [-1, -1])
g.connect(0, 1)
self.assertEqual(g.find_all_distances(1), [6, -1])
def test_failing(self):
g = Graph(4)
g.connect(3, 1)
g.connect(0, 1)
g.connect(0, 2)
self.assertEqual(g.find_all_distances(0), [6, 6, 12])