编辑代码

# 定义矩阵（二维数组）
matrix = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]

# 输出原始矩阵
print("原始矩阵：")
for row in matrix:
    print(row)

# 矩阵反转
new_matrix = []
for i in range(len(matrix)):
    new_row = []
    for j in reversed(range(len(matrix[i]))):
        new_row.append(matrix[i][j])
    new_matrix.append(new_row)

# 输出反转后的矩阵
print("反转后的矩阵：")
for row in new_matrix:
    print(row)