human
Reverse substrings of given string according to specified array indices | Function to perform the reversal operation on the given string.
Size of string.
Stores the count of indices.
Count the positions where reversals will begin.
Store the count of reversals beginning at position i.
Check if the count [ i ] is odd the swap the character.
Return the updated string.
Driver Code.
Given str.
Given array of reversing index.
Function Call"
How can the above be solved in Python?
 Can you provide a code to reverse substrings of given string according to specified array indices and the other steps required?
assistant
#Here is code to reverse substrings of given string according to specified array indices and the other steps required.
 def modifyString ( A , str , K ) :
	N = len ( str )
	count = [ 0 ] * ( N + 1 )
	for i in range ( K ) :
		count [ A [ i ] ] += 1
	for i in range ( 1 , N // 2 + 1 ) :
		count [ i ] = count [ i ] + count [ i - 1 ]
		if ( count [ i ] & 1 ) :
			str [ i - 1 ] , str [ N - i ] = str [ N - i ] , str [ i - 1 ]
	return " " . join ( str )
if __name__ == ' _ _ main _ _ ' :
	str1 = " abcdef "
	str = [ i for i in str1 ]
	arr = [ 1 , 2 , 3 ]
	K = len ( arr )
	print ( modifyString ( arr , str , K ) )