We can solve the maximum (AND) subsequence of an array by checking the common bits in numbers in O(nlogn).But how can we find a susequence with maximum XOR?
We can solve the maximum (AND) subsequence of an array by checking the common bits in numbers in O(nlogn).But how can we find a susequence with maximum XOR?
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One thing about maximum AND subsequence:
When you do AND operation with 2 numbers, then it is always true that result ≤ min(firstnum, secondnum). Can be proved easily. So, maximum AND subsequence in array is maximum number in array.