Matrix Scalar Multiplication

Problem

Multiply every entry of matrix A by the scalar s.

Return B with B[i][j] = s * A[i][j].

Hint

One comprehension over rows, one over entries.

case 1

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

expected: [[2,4],[6,8]]

case 2

in: [[[1,-1],[-2,2]],-1]

expected: [[-1,1],[2,-2]]

case 3

in: [[[2,4],[6,8]],0.5]

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

case 4

in: [[[1,2],[3,4]],0]

expected: [[0,0],[0,0]]

Starter codePython

def scale_matrix(A, s):
    # Your code here
    pass

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