Store indexes of clues as a set

2017-10-11 15:52:27 -07:00 · 2017-10-11 15:52:27 -07:00 · 6da7c2ecd6
commit 6da7c2ecd6
parent a34987e3db
1 changed files with 2 additions and 0 deletions
--- a/sudoku.py
+++ b/sudoku.py
@ -13,8 +13,10 @@ class Sudoku:
        sz4 = size ** 4
        if board:
            self._board = bytes(board)[:sz4]
+            self._clues = set(i for i in range(len(self._board)) if self._board[i] != 0)
        else:
            self._board = bytes(sz4)
+            self._clues = set()

    @property
    def size(self):