6kyu_Find_The_Parity_Outlier.py

""" 
You are given an array (which will have a length of at least 3, but could be very large) containing integers. 
The array is either entirely comprised of odd integers or entirely comprised of even integers except for a single integer N. 
Write a method that takes the array as an argument and returns this "outlier" N.

Examples
[2, 4, 0, 100, 4, 11, 2602, 36]
Should return: 11 (the only odd number)

[160, 3, 1719, 19, 11, 13, -21]
Should return: 160 (the only even number) 
"""


#solution
def find_outlier(integers):
    parities = [n & 1 for n in integers]
    return integers[parities.index((parities[0] in parities[1:3]) ^ parities[0])]