Python获取二维矩阵最大最小值 python计算二维数组

#二维数组操作
#初始化
n = 3
m = 3
#方法一
matrix1 = [[0,0,0],[0,0,0],[0,0,0]]
#方法二
matrix2 = [[0 for i in range(n)] for i in range(m)]
#修改
matrix2[0][2] = 1
#二维数组按列相加
res = [0 for i in range(n)]
for i in range(m):
    for j in range(n):
        res[j] += matrix2[i][j]
#二维数字按行相加
res = [0 for i in range(m)]
for i in range(m):
    for j in range(n):
        res[i] += matrix2[i][j]
#输出
for i in range(len(matrix2)):
    for j in range(len(matrix2[i])):
        print(matrix2[i][j])

print(matrix1)
print(matrix2)
print(res)