human
Lexicographically smallest string of maximum length made up of first K alphabets that does not contain any repeating substring | Function to find the lexicographically smallest string of the first K lower case alphabets having unique substrings.
Stores the resultant string.
Iterate through all the characters.
Inner Loop for making pairs and adding them into string.
Adding first character so that substring consisting of the last the first alphabet is present.
Print the resultant string.
Driver Code"
Solution in Python:
 Can you provide a code to lexicographically smallest string of maximum length made up of first K alphabets that does not contain any repeating substring and the other steps required?
assistant
#Here is code to lexicographically smallest string of maximum length made up of first K alphabets that does not contain any repeating substring and the other steps required.
 def generateString ( K ) :
	s = " "
	for i in range ( 97 , 97 + K , 1 ) :
		s = s + chr ( i ) ;
		for j in range ( i + 1 , 97 + K , 1 ) :
			s += chr ( i )
			s += chr ( j )
	s += chr ( 97 )
	print ( s )
if __name__ == ' _ _ main _ _ ' :
	K = 4
	generateString ( K )