Enable Javascript in your browser and then refresh this page, for a much enhanced experience.
First solution in Clear category for What Is Wrong With This Family? by liw_80
def is_family(tree):
tree_transposition = list(zip(*tree))
father = set(tree_transposition[0])
son = tree_transposition[1]
# kick off stranger
if len(list(filter(lambda f: f not in son, father))) > 1:
return False
# kick off son is father
if len(list(filter(lambda x: [x[1], x[0]] in tree, tree))):
return False
# kick off brother is father
if len(set(son)) != len(son):
return False
return True
if __name__ == "__main__":
#These "asserts" using only for self-checking and not necessary for auto-testing
assert is_family([
['Logan', 'Mike']
]) == True, 'One father, one son'
assert is_family([
['Logan', 'Mike'],
['Logan', 'Jack']
]) == True, 'Two sons'
assert is_family([
['Logan', 'Mike'],
['Logan', 'Jack'],
['Mike', 'Alexander']
]) == True, 'Grandfather'
assert is_family([
['Logan', 'Mike'],
['Logan', 'Jack'],
['Mike', 'Logan']
]) == False, 'Can you be a father for your father?'
assert is_family([
['Logan', 'Mike'],
['Logan', 'Jack'],
['Mike', 'Jack']
]) == False, 'Can you be a father for your brather?'
assert is_family([
['Logan', 'William'],
['Logan', 'Jack'],
['Mike', 'Alexander']
]) == False, 'Looks like Mike is stranger in Logan\'s family'
print("Looks like you know everything. It is time for 'Check'!")
July 3, 2019