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graph.py
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class graph:
def __init__(self):
self.store = []
def addVertex(self,n):
for i in range(n):
self.store += [[]]
if n < 0:
return -1
return len(self.store)
def addEdge(self, from_index, to_index, directed, weight):
if from_index >= len(self.store) or to_index >= len(self.store) or weight == 0:
return False
if directed == True:
self.store[from_index] += [[to_index,weight]]
if directed == False:
self.store[from_index] += [[to_index, weight]]
self.store[to_index] += [[from_index, weight]]
else:
return -1
def traverse(self, start, typeBreadth):
if start > len(self.store):
return []
C = []
counter = 0
discovered = [False]*len(self.store)
processed = [False]*len(self.store)
rval = []
if start == None and typeBreadth == True:
# BREADTH, QUEUE
for i in range(0, len(self.store)):
if discovered[i] == False:
C.extend(self.store[i])
discovered[i] = True
rval += [i]
while len(C) != 0:
w = C.pop(0)
try:
if discovered[w[0]] == False:
rval += [w[0]]
C.extend(self.store[w[0]])
discovered[w[0]] = True
processed[w[0]] = True
except IndexError:
print w[0]
return [rval]
if start == None and typeBreadth == False:
for i in range(0, len(self.store)):
if discovered[i] == False:
C.extend(self.store[i])
discovered[i] = True
rval += [i]
while len(C) != 0:
w = C.pop(len(C)-1)
try:
if discovered[w[0]] == False:
rval += [w[0]]
C.extend(self.store[w[0]])
discovered[w[0]] = True
processed[w[0]] = True
except IndexError:
print w[0]
return rval
if start != None and typeBreadth == True:
# BREADTH, QUEUE
for i in range(0, len(self.store)):
if discovered[start] == False:
discovered[start] = True
C.extend(self.store[start])
rval += [start]
while len(C) != 0:
w = C.pop(0)
try:
if discovered[w[0]] == False:
rval += [w[0]]
C.extend(self.store[w[0]])
discovered[w[0]] = True
processed[w[0]] = True
except IndexError:
print w[0]
return rval
if start != None and typeBreadth == False:
for i in range(0, len(self.store)):
if discovered[start] == False:
discovered[start] = True
C.extend(self.store[start])
rval += [start]
while len(C) != 0:
w = C.pop(len(C)-1)
try:
if discovered[w[0]] == False:
rval += [w[0]]
C.extend(self.store[w[0]])
discovered[w[0]] = True
processed[w[0]] = True
except IndexError:
print w[0]
return rval
def printEdges(self):
print self.store
def connectivity(self, vx, vy):
rval = [False,False]
list_1 = self.traverse(vx, True)
if vy in list_1:
rval[0] = True
list_2 = self.traverse(vy, True)
if vx in list_2:
rval[1] = True
return rval
def path(self, vx, vy):
path1 = []
path2 = []
visited_list = []
if (self.connectivity(vx,vy)[0]):
start = vx
end = vy
rval = []
C = []
for i in range(len(self.store)):
visited_list += [False]
if visited_list[start] == False:
visited_list[start] = True
rval += [[start,None]]
for i in range(0,len(self.store[start])):
C += [[self.store[start][i][0],start]]
while len(C) != 0:
pop_val = C.pop(0)
if visited_list[pop_val[0]] == False:
rval += [pop_val]
for i in range(0, len(self.store[pop_val[0]])):
C += [[self.store[pop_val[0]][i][0], pop_val[0]]]
visited_list[pop_val[0]] = True
print rval
while end is not None:
for i in range(0,len(rval)):
if rval[i][0] == end:
path1 = [end] + path1
end = rval[i][1]
break
if (self.connectivity(vy,vx)[0]):
start = vy
end = vx
rval = []
C = []
visited_list = []
for i in range(len(self.store)):
visited_list += [False]
if visited_list[start] == False:
visited_list[start] = True
rval += [[start,None]]
for i in range(0, len(self.store[start])):
C += [[self.store[start][i][0], start]]
while len(C) != 0:
pop_val = C.pop(0)
if visited_list[pop_val[0]] == False:
rval += [pop_val]
for i in range(0, len(self.store[pop_val[0]])):
C += [[self.store[pop_val[0]][i][0], pop_val[0]]]
visited_list[pop_val[0]] = True
while end is not None:
for i in range(0, len(rval)):
if rval[i][0] == end:
path2 = [end] + path2
end = rval[i][1]
break
rval_true = [path1,path2]
return rval_true
235,1-8 Bot