如何在对维矩阵进行排序后获取元素

# 定义一个二维矩阵
matrix = [[5, 8, 1], [3, 2, 9], [7, 4, 6]]

# 使用快速排序算法对矩阵进行排序
def quick_sort(matrix):
    if len(matrix) <= 1:
        return matrix
    pivot = matrix[len(matrix) // 2]
    left = [x for x in matrix if x < pivot]
    middle = [x for x in matrix if x == pivot]
    right = [x for x in matrix if x > pivot]
    return quick_sort(left) + middle + quick_sort(right)

sorted_matrix = quick_sort(matrix)

# 获取排序后的元素
element = sorted_matrix[0][0]
print("排序后的元素为:", element)