CODE EXAMPLE FOR PYTHON

Algorithm of Broadcasting with NumPy Arrays

p = max(m, n)
if m < p:
    left-pad A's shape with 1s until it also has p dimensions

else if n < p:
    left-pad B's shape with 1s until it also has p dimensions
result_dims = new list with p elements

for i in p-1 ... 0:
    A_dim_i = A.shape[i]
    B_dim_i = B.shape[i]
    if A_dim_i != 1 and B_dim_i != 1 and A_dim_i != B_dim_i:
        raise ValueError("could not broadcast")
    else:
        # Pick the Array which is having maximum Dimension
        result_dims[i] = max(A_dim_i, B_dim_i)