我正试图找到一种方法来为y长度的x值生成唯一的排列.我想要做的是:
[0,1].unique_permutations(15)
# => [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
# [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1],
# [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1],
# ... massive snip
# [1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1],
# [1, 0, 1, 1, 0, 1, 0, 0, …