human
What is a code to count ways to obtain triplets with positive product consisting of at most one negative element and the other steps required given the following:
Count ways to obtain triplets with positive product consisting of at most one negative element | Function to calculate possible number of triplets.
counting frequency of positive numbers in array.
If current array element is positive.
Increment frequency.
Select a triplet from freq elements such that i < j < k ..
Driver Code"
How can the above be solved in Python?
assistant
#Here is code to count ways to obtain triplets with positive product consisting of at most one negative element and the other steps required.
 def possibleTriplets ( arr , N ) :
	freq = 0
	for i in range ( N ) :
		if ( arr [ i ] > 0 ) :
			freq += 1
	return ( freq * ( freq - 1 ) * ( freq - 2 ) ) // 6
if __name__ == ' _ _ main _ _ ' :
	arr = [ 2 , 5 , - 9 , - 3 , 6 ]
	N = len ( arr )
	print ( possibleTriplets ( arr , N ) )