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func xorAllNums(nums1 []int, nums2 []int) int {
    nums2WholeXor := 0

    for i:=0;i<len(nums2);i++ {
        nums2WholeXor ^= nums2[i]
    }

    ans := 0

    for i:=0;i<len(nums1);i++ {
        if len(nums2) & 1 == 1 {
            ans ^= nums1[i]
        }

        ans ^= nums2WholeXor
    }

    return ans
}
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