擅长:python、mysql、java
<p>我想也许你想从每一列和每一行得到由1个项目组成的所有元组,就像在行列式计算中一样。如果是:</p>
<pre><code>from itertools import permutations
def afficherListe(A):
"""A is a square matrix. Returns all tuples used in det(A)"""
n = len(A)
return [tuple(A[i][j] for i,j in enumerate(p)) for p in permutations(range(n))]
#tests:
A = [[1,2],[3,4]]
B = [[1,2,3],[4,5,6],[7,8,9]]
print(afficherListe(A))
print(afficherListe(B))
</code></pre>
<p>输出:</p>
^{pr2}$