human
Give me a code to remaining array element after repeated removal of last element and subtraction of each element from next adjacent element and the other steps required given the following:
Remaining array element after repeated removal of last element and subtraction of each element from next adjacent element | Function to find the last remaining array element after performing the given operations repeatedly.
Stores the resultant sum.
Traverse the array.
Increment sum by arr [ i ] * coefficient of i - th term in ( x - y ) ^ ( N - 1 ).
Update multiplier.
Return the resultant sum.
Driver Code"
Solution in Python:
assistant
#Here is code to remaining array element after repeated removal of last element and subtraction of each element from next adjacent element and the other steps required.
 def lastElement ( arr , n ) :
	sum = 0
	if n % 2 == 0 :
		multiplier = - 1
	else :
		multiplier = 1
	for i in range ( n ) :
		sum += arr [ i ] * multiplier
		multiplier = multiplier * ( n - 1 - i ) / ( i + 1 ) * ( - 1 )
	return sum
if __name__ == ' _ _ main _ _ ' :
	arr = [ 3 , 4 , 2 , 1 ]
	N = len ( arr )
	print ( int ( lastElement ( arr , N ) ) )