X DAYS

:

HOUR

:

MINS

:

SEC

Copied to Clipboard
Maximum AND Value
Medium Accuracy: 44.82% Submissions: 23631 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.

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.

Editorial

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

My Submissions:  