如何从固定的集合中生成固定大小的所有不同的2D数组？

def generate_arrays(collection, rows, cols):
    result = []
    array = [[None] * cols for _ in range(rows)]
    generate_helper(collection, array, 0, 0, 0, result)
    return result

def generate_helper(collection, array, index, row, col, result):
    if row == len(array):
        result.append(array)
        return
    
    if col == len(array[0]):
        col = 0
        row += 1
    
    for i in range(index, len(collection)):
        array[row][col] = collection[i]
        generate_helper(collection, array, i+1, row, col+1, result)
        array[row][col] = None

# 测试示例
collection = [1, 2, 3]
rows = 2
cols = 2
result = generate_arrays(collection, rows, cols)

# 打印结果
for array in result:
    for row in array:
        print(row)
    print()

[1, 2]
[3, None]

[1, 3]
[2, None]

[2, 1]
[3, None]

[2, 3]
[1, None]

[3, 1]
[2, None]

[3, 2]
[1, None]