Round-robin scheduling algorithm

pair-rotation.py

"""
Inspired from https://en.wikipedia.org/wiki/Round-robin_tournament#Scheduling_algorithm
"""

team = [
    "John",
    "Lee",
    "Dave",
    "Steve",
    "Louis",
    "Cindy",
]

N = len(team)

half = N // 2 # divide by two as we want pairs

options = []
a, b = team[:half], team[half:]
options.append(a + b)

for _ in range(N - 2):
	first_b = b.pop(0)
	last_a = a.pop()

	a.insert(1, first_b)
	b.append(last_a)
	options.append(a + b)

for opt in options:
 	print(opt)