421\. Maximum XOR of Two Numbers in an Array

Medium

Given an integer array `nums`, return _the maximum result of_ `nums[i] XOR nums[j]`, where `0 <= i <= j < n`.

**Example 1:**

**Input:** nums = [3,10,5,25,2,8]

**Output:** 28

**Explanation:** The maximum result is 5 XOR 25 = 28. 

**Example 2:**

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

**Output:** 127 

**Constraints:**

*   <code>1 <= nums.length <= 2 * 10<sup>5</sup></code>
*   <code>0 <= nums[i] <= 2<sup>31</sup> - 1</code>