Enable Javascript in your browser and then refresh this page, for a much enhanced experience.
First solution in Clear category for How to Find Friends by nabe
def check_connection(network, first, second):
lst = [set(frends.split('-')) for frends in network]
frends = set({first})
while True:
l = [couple for couple in lst if frends & couple]
if not l: break
lst = list(filter(lambda a: a not in l, lst))
frends = set.union(frends, *l)
return second in frends
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
assert check_connection(
("dr101-mr99", "mr99-out00", "dr101-out00", "scout1-scout2",
"scout3-scout1", "scout1-scout4", "scout4-sscout", "sscout-super"),
"scout2", "scout3") == True, "Scout Brotherhood"
assert check_connection(
("dr101-mr99", "mr99-out00", "dr101-out00", "scout1-scout2",
"scout3-scout1", "scout1-scout4", "scout4-sscout", "sscout-super"),
"super", "scout2") == True, "Super Scout"
assert check_connection(
("dr101-mr99", "mr99-out00", "dr101-out00", "scout1-scout2",
"scout3-scout1", "scout1-scout4", "scout4-sscout", "sscout-super"),
"dr101", "sscout") == False, "I don't know any scouts."
Dec. 28, 2015
