human
What is a code to longest sub and the other steps required given the following:
Longest sub | Function to return the length of the longest required sub - sequence.
Find the maximum element from the array.
Insert all lucas numbers below max to the set a and b are first two elements of the Lucas sequence.
If current element is a Lucas number , increment count.
Return the count.
Driver code"
Solution in Python:
assistant
#Here is code to longest sub and the other steps required.
 def LucasSequence ( arr , n ) :
	max = arr [ 0 ]
	for i in range ( len ( arr ) ) :
		if ( arr [ i ] > max ) :
			max = arr [ i ]
	s = set ( )
	a = 2
	b = 1
	s . add ( a )
	s . add ( b )
	while ( b < max ) :
		c = a + b
		a = b
		b = c
		s . add ( b )
	count = 0
	for i in range ( n ) :
		if ( arr [ i ] in s ) :
			count += 1
	return count
if __name__ == ' _ _ main _ _ ' :
	arr = [ 7 , 11 , 22 , 4 , 2 , 1 , 8 , 9 ]
	n = len ( arr )
	print ( LucasSequence ( arr , n ) )