python - Interweaving two numpy arrays

Question

Assume the following arrays are given:

a = array([1,3,5])
b = array([2,4,6])

How would one interweave them efficiently so that one gets a third array like this

c = array([1,2,3,4,5,6])

It can be assumed that length(a)==length(b).

Answer 1

I like Josh's answer. I just wanted to add a more mundane, usual, and slightly more verbose solution. I don't know which is more efficient. I expect they will have similar performance.

import numpy as np
a = np.array([1,3,5])
b = np.array([2,4,6])

c = np.empty((a.size + b.size,), dtype=a.dtype)
c[0::2] = a
c[1::2] = b