Frobenius Norm

Problem

Compute the Frobenius norm of matrix A: the square root of the sum of squared entries.

||A||_F = sqrt(sum(A[i][j]^2)).

Hint

Flatten the matrix and take the L2 norm of all entries.

case 1

in: [[[1,2],[3,4]]]

expected: 5.477225575051661

case 2

in: [[[3,0],[0,4]]]

expected: 5

case 3

in: [[[1,1],[1,1]]]

expected: 2

case 4

in: [[[0]]]

expected: 0

Starter codePython

def frobenius_norm(A):
    # Your code here
    pass

4 test cases · run your code against them in the editor