2x2 Matrix Determinant

Problem

Compute the determinant of a 2x2 matrix: det = A[0][0]*A[1][1] - A[0][1]*A[1][0].

case 1

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

expected: -2

case 2

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

expected: 6

case 3

in: [[[1,0],[0,1]]]

expected: 1

case 4

in: [[[0,1],[0,0]]]

expected: 0

Starter codePython

def det_2x2(A):
    # Your code here
    pass

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