human
Maximum Bitwise XOR of node values of an Acyclic Graph made up of N given vertices using M edges | Function to find the maximum Bitwise XOR of any subset of the array of size K.
Number of node must K + 1 for K edges.
Stores the maximum Bitwise XOR.
Generate all subsets of the array.
__builtin_popcount ( ) returns the number of sets bits in an integer.
Initialize current xor as 0.
If jth bit is set in i then include jth element in the current xor.
Update the maximum Bitwise XOR obtained so far.
Return the maximum XOR.
Driver Code"
How can the above be solved in Python?
 ... Write me a code to maximum Bitwise XOR of node values of an Acyclic Graph made up of N given vertices using M edges and the other steps required?
assistant
#Here is code to maximum Bitwise XOR of node values of an Acyclic Graph made up of N given vertices using M edges and the other steps required.
 def maximumXOR ( arr , n , K ) :
	K += 1
	maxXor = - 10 ** 9
	for i in range ( 1 << n ) :
		if ( bin ( i ) . count ( '1' ) == K ) :
			cur_xor = 0
			for j in range ( n ) :
				if ( i & ( 1 << j ) ) :
					cur_xor = cur_xor ^ arr [ j ]
			maxXor = max ( maxXor , cur_xor )
	return maxXor
if __name__ == ' _ _ main _ _ ' :
	arr = [ 1 , 2 , 3 , 4 ]
	N = len ( arr )
	M = 2
	print ( maximumXOR ( arr , N , M ) )