human
Find a permutation of 2 N numbers such that the result of given expression is exactly 2 K | Function to find the required permutation of first 2 * N natural numbers.
Iterate in blocks of 2.
We need more increments , so print in reverse order.
We have enough increments , so print in same order.
Driver Code"
Solution in Python:

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Can you provide a code to find a permutation of 2 N numbers such that the result of given expression is exactly 2 K and the other steps required?
assistant
#Here is code to find a permutation of 2 N numbers such that the result of given expression is exactly 2 K and the other steps required.
 def printPermutation ( n , k ) :
	for i in range ( 1 , n + 1 ) :
		x = 2 * i - 1 ;
		y = 2 * i ;
		if ( i <= k ) :
			print ( y , x , end = " ▁ " ) ;
		else :
			print ( x , y , end = " ▁ " ) ;
if __name__ == " _ _ main _ _ " :
	n = 2 ; k = 1 ;
	printPermutation ( n , k ) ;