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First solution in Clear category for Friends by szymonkukla1
class Friends:
def __init__(self, connections):
self.con = []
for i in connections:
if(not(i in self.con)):
self.con.append(i)
def add(self, connection):
if(connection in self.con):
return False
self.con.append(connection)
return True
def remove(self, connection):
if(connection in self.con):
self.con.remove(connection)
return True
return False
def names(self):
nam = set()
for i in self.con:
for x in i:
nam.add(x)
return nam
def connected(self, name):
nams = set()
for i in self.con:
if(name in i):
nams.update(i)
nams.discard(name)
return nams
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
letter_friends = Friends(({"a", "b"}, {"b", "c"}, {"c", "a"}, {"a", "c"}))
digit_friends = Friends([{"1", "2"}, {"3", "1"}])
assert letter_friends.add({"c", "d"}) is True, "Add"
assert letter_friends.add({"c", "d"}) is False, "Add again"
assert letter_friends.remove({"c", "d"}) is True, "Remove"
assert digit_friends.remove({"c", "d"}) is False, "Remove non exists"
assert letter_friends.names() == {"a", "b", "c"}, "Names"
assert letter_friends.connected("d") == set(), "Non connected name"
assert letter_friends.connected("a") == {"b", "c"}, "Connected name"
Jan. 3, 2017
