human
Number of substrings with each character occurring even times | Function to count substrings having even frequency of each character.
Stores the total count of substrings.
Traverse the range [ 0 , N ] :.
Traverse the range [ i + 1 , N ].
Stores the substring over the range of indices [ i , len ].
Stores the frequency of characters.
Count frequency of each character.
Traverse the dictionary.
If any of the keys have odd count.
Otherwise.
Return count.
Driver Code"
Solution in Python:
 ... Write me a code to number of substrings with each character occurring even times and the other steps required?
assistant
#Here is code to number of substrings with each character occurring even times and the other steps required.
 def subString ( s , n ) :
	count = 0
	for i in range ( n ) :
		for len in range ( i + 1 , n + 1 ) :
			test_str = ( s [ i : len ] )
			res = { }
			for keys in test_str :
				res [ keys ] = res . get ( keys , 0 ) + 1
			flag = 0
			for keys in res :
				if res [ keys ] % 2 != 0 :
					flag = 1
					break
			if flag == 0 :
				count += 1
	return count
S = " abbaa "
N = len ( S )
print ( subString ( S , N ) )