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Maximum XOR of two numbers in an array
Medium Accuracy: 81.56% Submissions: 3193 Points: 4

Given an array of non-negative integers of size N. Find the maximum possible XOR between two numbers present in the array.

Example 1:

​Input:
Arr = {25, 10, 2, 8, 5, 3}
Output: 28
Explanation:
The maximum result is 5 ^ 25 = 28.

Example 2:

Input :
Arr = {1, 2, 3, 4, 5, 6, 7}
Output : 7
Explanation :
The maximum result is 1 ^ 6 = 7.
Your task :
You don't need to read input or print anything. Your task is to complete the function max_xor() which takes an array of integers and it's size as input and returns maximum XOR of two numbers in an array.
 
Expected Time Complexity : O(NlogN)
Expected Auxiliary Space : O(N)
 
Constraints:
1 <= N <=2*104
1<= A[i] <= 106

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Maximum XOR of two numbers in an array

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