Question

I’m trying to combine a matrice into a single list. I’ve tried to wrap my head around tree traversals / 0(n*expression) stuff that i keep finding via search. I really don’t think this problem is as hard as i’m making it out to be!?

# example of what output should be 
# ('147','258','369')

m = [1,2,3]
n = [4,5,6]
o = [7,8,9]

def myFun(*args):
    return [zip(args[x][i]) for x in args for i in args[x]]

print(myFun(m,n,o))

For future reference, would using a map be a smarter approach for handling matrices in this manor? I’ve read that maps can apply a function to every element, as such i was skeptical about using such a method and getting additional output (e.g. [(‘471′,’582′,’693’, and so on)]

Answer 1

What this comes down to is transposing the matrix. This can be done with

zip(*args)

Once we have this, we can join each row to form a new integer, and place these values in a new list:

def myFun(*args):
    return [int(''.join(map(str, l))) for l in zip(*args)]