Maximum XOR of Two Numbers in an Array

Medium

Given an integer array nums, return the maximum result of nums[i] XOR nums[j] over all pairs 0 <= i <= j < n.

Example 1

Input:  nums = [3,10,5,25,2,8]
Output: 28
Explanation: 5 XOR 25 = 28 is the largest pairwise XOR.

Example 2

Input:  nums = [14,70,53,83,49,91,36,80,92,51,66,70]
Output: 127

Example 3

Input:  nums = [0]
Output: 0

Constraints

• 1 <= nums.length <= 2 * 10^5
• 0 <= nums[i] < 2^31