human
Maximum bitwise OR value of subsequence of length K | Function to convert bit array to decimal number.
Return the final result.
Function to find the maximum Bitwise OR value of subsequence of length K.
Initialize bit array of size 32 with all value as 0.
Iterate for each index of bit [ ] array from 31 to 0 , and check if the ith value of bit array is 0.
Check for maximum contributing element.
Update the bit array if max_contributing element is found.
Decrement the value of K.
Return the result.
Given array arr [ ].
Length of subsequence.
Function call"
How can the above be solved in Python?
 ... Give me a code to maximum bitwise OR value of subsequence of length K and the other steps required?
assistant
#Here is code to maximum bitwise OR value of subsequence of length K and the other steps required.
 def build_num ( bit ) :
	ans = 0
	for i in range ( 0 , 32 ) :
		if ( bit [ i ] ) :
			ans += ( 1 << i )
	return ans ;
def maximumOR ( arr , n , k ) :
	bit = [ 0 ] * 32
	for i in range ( 31 , - 1 , - 1 ) :
		if ( bit [ i ] == 0 and k > 0 ) :
			temp = build_num ( bit )
			temp1 = temp
			val = - 1
			for j in range ( 0 , n ) :
				if ( temp1 < ( temp arr [ j ] ) ) :
					temp1 = temp | arr [ j ]
					val = arr [ j ]
			if ( val != - 1 ) :
				k -= 1
				for j in range ( 0 , 32 ) :
					if ( val & ( 1 << j ) ) :
						bit [ j ] += 1
	return build_num ( bit )
arr = [ 5 , 9 , 7 , 19 ]
k = 3 ;
n = len ( arr )
print ( maximumOR ( arr , n , k ) )