human
Can you provide a code to concatenate strings in any order to get Maximum Number of " AB " and the other steps required given the following:
Concatenate strings in any order to get Maximum Number of " AB " | Function to find maximum number of ABs.
variable A , B , AB for count strings that end with ' A ' but not end with ' B ' , ' B ' but does not end with ' A ' and ' B ' and ends with ' A ' respectively ..
' AB ' is already present in string before concatenate them.
count of strings that begins with ' B ' and ends with 'A.
count of strings that begins with ' B ' but does not end with 'A.
count of strings that ends with ' A ' but not end with 'B.
updating the value of ans and add extra count of 'AB.
Driver Code"
How can the above be solved in Python?
assistant
#Here is code to concatenate strings in any order to get Maximum Number of " AB " and the other steps required.
 def maxCountAB ( s , n ) :
	A = 0
	B = 0
	BA = 0
	ans = 0
	for i in range ( n ) :
		S = s [ i ]
		L = len ( S )
		for j in range ( L - 1 ) :
			if ( S [ j ] == ' A ' and S [ j + 1 ] == ' B ' ) :
				ans += 1
		if ( S [ 0 ] == ' B ' and S [ L - 1 ] == ' A ' ) :
			BA += 1
'
	elif ( S [ 0 ] == ' B ' ) :
		B += 1
'
	elif ( S [ L - 1 ] == ' A ' ) :
		A += 1
'
	if ( BA == 0 ) :
		ans += min ( B , A )
	elif ( A + B == 0 ) :
		ans += BA - 1
	else :
		ans += BA + min ( B , A )
	return ans
if __name__ == ' _ _ main _ _ ' :
	s = [ " ABCA " , " BOOK " , " BAND " ]
	n = len ( s )
	print ( maxCountAB ( s , n ) )