Activity Selection Problem

"""The following implementation assumes that the activities
are already sorted according to their finish time"""

"""Prints a maximum set of activities that can be done by a
single person, one at a time"""
# n --> Total number of activities
# s[]--> An array that contains start time of all activities
# f[] --> An array that contains finish time of all activities

def printMaxActivities(s, f ):
	n = len(f)
	print ("The following activities are selected")

	# The first activity is always selected
	i = 0
	print (i,end=' ')

	# Consider rest of the activities
	for j in range(1, n):

		# If this activity has start time greater than
		# or equal to the finish time of previously
		# selected activity, then select it
		if s[j] >= f[i]:
			print (j,end=' ')
			i = j

# Driver program to test above function
s = [1 , 3 , 0 , 5 , 8 , 5]
f = [2 , 4 , 6 , 7 , 9 , 9]
printMaxActivities(s , f)