Maximum AND Value
Medium Accuracy: 44.82% Submissions: 21086 Points: 4

Given an array arr[] of N positive elements. The task is to find the Maximum AND Value generated by any pair(arri, arrj) from the array such that i != j.
Note: AND is bitwise '&' operator.


Example 1:

Input: 
N = 4
arr[] = {4, 8, 12, 16}
Output: 8
Explanation:
Pair (8,12) has the Maximum AND Value 8.

Example 2:

Input:
N = 4
arr[] = {4, 8, 16, 2}
Output: 0
Explanation: Any two pairs of the array has 
Maximum AND Value 0.

Your Task: 
You don't need to read input or print anything. Your task is to complete the function maxAND() which takes the array elements and N (size of the array) as input parameters and returns the maximum AND value generated by any pair in the array. 

Expected Time Complexity: O(N * log M), where M is the maximum element of the array.

Expected Auxiliary Space: O(1).

Constraints:

1 <= N <= 105
1 <= arr[i] <= 105

We are replacing the old Disqus forum with the new Discussions section given below.
Click here to view old Disqus comments.


to report an issue on this page.

Editorial

We strongly recommend solving this problem on your own before viewing its editorial. Do you still want to view the editorial?

Yes

All Submissions

My Submissions:

Login to access your submissions.

Maximum AND Value

Output Window