def is_sanshoku_doujun(groups):
sequences = get_sequences(groups)
if len(sequences) < 3:
return False
suit_counts = get_suit_counts_groups(sequences)
if 3 in suit_counts or 4 in suit_counts:
return False
heads = [sequence.tiles[0] for sequence in sequences]
return # TODO
def is_ittsu(groups):
sequences = get_sequences(groups)
if len(sequences) < 3:
return False
suit_counts = get_suit_counts_groups(sequences)
if not (3 in suit_counts.values() or 4 in suit_counts.values()):
return False
suit = [suit for suit, count in suit_counts.iteritems() if count >= 3][0]
return (Sequence(suit(1)) in groups and Sequence(suit(4)) in groups
and Sequence(suit(7)) in groups)
