human
Maximize frequency of an element by at most one increment or decrement of all array elements | Function to maximize the frequency of an array element by incrementing or decrementing array elements at most once.
Stores the largest array element.
Stores the smallest array element.
freq [ i ] : Stores frequency of ( i + Min ) in the array.
Traverse the array.
Update frequency of arr [ i ].
Stores maximum frequency of an array element by incrementing or decrementing array elements.
Iterate all the numbers over the range [ Min , Max ].
Stores sum of three consecutive numbers.
Update maxSum.
Print maxSum.
Driver Code.
Function call"
How can the above be solved in Python?

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Give me a code to maximize frequency of an element by at most one increment or decrement of all array elements and the other steps required?
assistant
#Here is code to maximize frequency of an element by at most one increment or decrement of all array elements and the other steps required.
 def max_freq ( arr , N ) :
	Max = max ( arr )
	Min = min ( arr )
	freq = [ 0 ] * ( Max - Min + 1 )
	for i in range ( N ) :
		freq [ arr [ i ] - Min ] += 1
	maxSum = 0
	for i in range ( Max - Min - 1 ) :
		val = freq [ i ] + freq [ i + 1 ] + freq [ i + 2 ]
		maxSum = max ( maxSum , val )
	print ( maxSum )
if __name__ == " _ _ main _ _ " :
	arr = [ 3 , 1 , 4 , 1 , 5 , 9 , 2 ]
	N = len ( arr )
	max_freq ( arr , N )