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Maximize array sum by alternating the signs of adjacent elements | Function to find the maximum sum by alternating the signs of adjacent elements of the array.
Stores count of negative elements in the array.
Stores maximum sum by alternating the signs of adjacent elements.
Stores smallest absolute value of array elements.
Stores sum of absolute value of array elements.
Traverse the array.
If arr [ i ] is a negative number.
Update cntNeg.
Update sum.
Update SmValue.
Update MaxAltSum.
If cntNeg is an odd number.
Update MaxAltSum.
Driver Code"
How can the above be solved in Python?
assistant
#Here is code to maximize array sum by alternating the signs of adjacent elements and the other steps required.
 def findMaxSumByAlternatingSign ( arr , N ) :
	cntNeg = 0
	MaxAltSum = 0
	SmValue = 0
	sum = 0
	for i in range ( N ) :
		if ( arr [ i ] < 0 ) :
			cntNeg += 1
		sum += abs ( arr [ i ] )
		SmValue = min ( SmValue , abs ( arr [ i ] ) )
	MaxAltSum = sum
	if ( cntNeg & 1 ) :
		MaxAltSum -= 2 * SmValue
	return MaxAltSum
if __name__ == ' _ _ main _ _ ' :
	arr = [ 1 , 1 , - 2 , - 4 , 5 ]
	N = len ( arr )
	print ( findMaxSumByAlternatingSign ( arr , N ) )