def BFS(G,s):
for u in G.getVertices():
if u!=s:
u.color='white'
u.d=np.inf
u.pre=None
s.color='gray'
s.d=0
s.pre=None
Q=Queue()
Q.Enqueue(s)
while not Q.IsEmpty():
u=Q.Dequeue()
for v in u.getConnections():
if v.color=='white':
v.color='gray'
v.d=u.d+1
v.pre=u
Q.Enqueue(v)
u.color='black'
from myqueue import Queue
myq = Queue()
myq.Enqueue('A')
myq.Enqueue('B')
myq.Enqueue('C')
myq.Enqueue('D')
myq.Enqueue('E')
myq.PrintQueue()
print("Elements in queue: ", myq.queueNo) # Please check queue.py for details
myq.Dequeue()
myq.PrintQueue()
print("Elements in queue: ", myq.queueNo) # Please check queue.py for details
myq.Enqueue('F')
myq.PrintQueue()
print("Elements in queue: ", myq.queueNo) # Please check queue.py for details