human
Maximum value of ( arr [ i ] * arr [ j ] ) + ( arr [ j ] | Function to find the value of the expression a * b + ( b - a ).
Function to find the maximum value of the expression a * b + ( b - a ) possible for any pair ( a , b ).
Sort the vector in ascending order.
Stores the maximum value.
Update ans by choosing the pair of the minimum and 2 nd minimum.
Update ans by choosing the pair of maximum and 2 nd maximum.
Return the value of ans.
Driver Code.
Given inputs"
How can the above be solved in Python?
assistant
#Here is code to maximum value of ( arr [ i ] * arr [ j ] ) + ( arr [ j ] and the other steps required.
 def calc ( a , b ) :
	return a * b + ( b - a )
def findMaximum ( arr , N ) :
	arr = sorted ( arr )
	ans = - 10 ** 9
	ans = max ( ans , calc ( arr [ 0 ] , arr [ 1 ] ) )
	ans = max ( ans , calc ( arr [ N - 2 ] , arr [ N - 1 ] ) )
	return ans
if __name__ == ' _ _ main _ _ ' :
	arr = [ 0 , - 47 , 12 ]
	N = len ( arr )
	print ( findMaximum ( arr , N ) )
	arr = [ 0 , - 47 , 12 ]
	N = len ( arr )
	print ( findMaximum ( arr , N ) )