human
Can you provide a code to sum of width ( max and min diff ) of all Subsequences and the other steps required given the following:
Sum of width ( max and min diff ) of all Subsequences | Function to return sum of width of all subsets.
Sort the array.
Driver program"
How can the above be solved in Python?
assistant
#Here is code to sum of width ( max and min diff ) of all Subsequences and the other steps required.
 def SubseqWidths ( A ) :
	MOD = 10 ** 9 + 7
	N = len ( A )
	A . sort ( )
	pow2 = [ 1 ]
	for i in range ( 1 , N ) :
		pow2 . append ( pow2 [ - 1 ] * 2 % MOD )
	ans = 0
	for i , x in enumerate ( A ) :
		ans = ( ans + ( pow2 [ i ] - pow2 [ N - 1 - i ] ) * x ) % MOD
	return ans
A = [ 5 , 6 , 4 , 3 , 8 ]
print ( SubseqWidths ( A ) )