100 people in circle, killing next one.

# 100 people stay in circle, first have sword and kill second,
# and he gives sword to next one (third) which kills next one (forth), etc.
# Finally last only one. Which one ?

data = list(range(1, 101))

position = 1 # first killed (not first killing) - it is list index (which starts at 0), not person number (which start at 1)

while len(data) > 1:
    print('killed:', data.pop(position))
    position = (position+1) % len(data)

print('last:', data[0])