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 yamauk
# migrated from python 2.7
def check_connection(network, first, second):
network = [set(x.split('-')) for x in network]
unions = []
for edge in network:
for u in unions:
if not edge.isdisjoint(u):
unions.remove(u)
edge |= u
unions.append(edge)
for u in unions:
if (first in u) and (second in u):
return True
return False
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."
May 7, 2015