human
Lexicographically smallest string of length N and sum K | Function to return the lexicographically smallest string of length n that satisfies the given condition.
Iteration from the last position in the array.
If k is a positive integer.
' z ' needs to be inserted.
Add the required character.
Driver code"
How can the above be solved in Python?

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What is a code to lexicographically smallest string of length N and sum K and the other steps required?
assistant
#Here is code to lexicographically smallest string of length N and sum K and the other steps required.
 def lexo_small ( n , k ) :
	arr = " " ;
	for i in range ( n ) :
		arr += ' a ' ;
	for i in range ( n - 1 , - 1 , - 1 ) :
		k -= i ;
		if ( k >= 0 ) :
			if ( k >= 26 ) :
				arr = arr [ : i ] + ' z ' + arr [ i + 1 : ] ;
				k -= 26 ;
			else :
				c = ( k + 97 - 1 ) ;
				arr = arr [ : i ] + chr ( c ) + arr [ i + 1 : ] ;
				k -= ord ( arr [ i ] ) - ord ( ' a ' ) + 1 ;
		else :
			break ;
		k += i ;
	return arr ;
if __name__ == ' _ _ main _ _ ' :
	n = 5 ; k = 42 ;
	arr = lexo_small ( n , k ) ;
	print ( arr ) ;