The XOR sum of a list is the bitwise XOR of all its elements. If the list only contains one element, then its XOR sum will be equal to this element.
[1,2,3,4] is equal to 1 XOR 2 XOR 3 XOR 4 = 4, and the XOR sum of [3] is equal to 3.You are given two 0-indexed arrays arr1 and arr2 that consist only of non-negative integers.
Consider the list containing the result of arr1[i] AND arr2[j] (bitwise AND) for every (i, j) pair where 0 <= i < arr1.length and 0 <= j < arr2.length.
Return the XOR sum of the aforementioned list.
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Example 1:
\n\n\nInput: arr1 = [1,2,3], arr2 = [6,5]\nOutput: 0\nExplanation: The list = [1 AND 6, 1 AND 5, 2 AND 6, 2 AND 5, 3 AND 6, 3 AND 5] = [0,1,2,0,2,1].\nThe XOR sum = 0 XOR 1 XOR 2 XOR 0 XOR 2 XOR 1 = 0.\n\n\n
Example 2:
\n\n\nInput: arr1 = [12], arr2 = [4]\nOutput: 4\nExplanation: The list = [12 AND 4] = [4]. The XOR sum = 4.\n\n\n
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Constraints:
\n\n1 <= arr1.length, arr2.length <= 1050 <= arr1[i], arr2[j] <= 109列表的 异或和（XOR sum）指对所有元素进行按位 XOR 运算的结果。如果列表中仅有一个元素，那么其 异或和 就等于该元素。
[1,2,3,4] 的 异或和 等于 1 XOR 2 XOR 3 XOR 4 = 4 ，而 [3] 的 异或和 等于 3 。给你两个下标 从 0 开始 计数的数组 arr1 和 arr2 ，两数组均由非负整数组成。
根据每个 (i, j) 数对，构造一个由 arr1[i] AND arr2[j]（按位 AND 运算）结果组成的列表。其中 0 <= i < arr1.length 且 0 <= j < arr2.length 。
返回上述列表的 异或和 。
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示例 1：
\n\n输入：arr1 = [1,2,3], arr2 = [6,5]\n输出：0\n解释：列表 = [1 AND 6, 1 AND 5, 2 AND 6, 2 AND 5, 3 AND 6, 3 AND 5] = [0,1,2,0,2,1] ，\n异或和 = 0 XOR 1 XOR 2 XOR 0 XOR 2 XOR 1 = 0 。\n\n
示例 2：
\n\n输入：arr1 = [12], arr2 = [4]\n输出：4\n解释：列表 = [12 AND 4] = [4] ，异或和 = 4 。\n\n\n
\n\n
提示：
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