human
Give me a code to find smallest number n such that n XOR n + 1 equals to given k given the following:
Find smallest number n such that n XOR n + 1 equals to given k . | function to return the required n.
if k is of form 2 ^ i - 1.
driver program"
Solution in Python:
assistant
#Here is code to find smallest number n such that n XOR n + 1 equals to given k .
 def xorCalc ( k ) :
	if ( k == 1 ) :
		return 2
	if ( ( ( k + 1 ) & k ) == 0 ) :
		return k / 2
	return 1 ;
k = 31
print ( int ( xorCalc ( k ) ) )