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Count ways to generate pairs having Bitwise XOR and Bitwise AND equal to X and Y respectively | Function to return the count of possible pairs of A and B whose Bitwise XOR is X and Y respectively.
Stores the count of pairs.
Iterate till any bit are set.
Extract i - th bit of X and Y.
Divide X and Y by 2.
If Xi = 1 and Yi = 2 , multiply counter by 2.
Increase required count.
If Xi = 1 and Yi = 1.
No answer exists.
Return the final count.
Given X and Y.
Function call"
Solution in Python:
assistant
#Here is code to count ways to generate pairs having Bitwise XOR and Bitwise AND equal to X and Y respectively and the other steps required.
 def countOfPairs ( x , y ) :
	counter = 1
	while ( x or y ) :
		bit1 = x % 2
		bit2 = y % 2
		x >>= 1
		y >>= 1
		if ( bit1 == 1 and bit2 == 0 ) :
			counter *= 2
			continue
		if ( bit1 & bit2 ) :
			counter = 0
			break
	return counter
X = 2
Y = 5
print ( countOfPairs ( X , Y ) )