func totalHammingDistance(nums []int) int {
    sum := 0
    length := len(nums)

    for i := 0; i < 32; i++ {
        oneFrequency := 0

        for i := range nums {
            oneFrequency = oneFrequency + nums[i] & 1
            nums[i] = nums[i] >> 1
        }

        sum = sum + oneFrequency * (length - oneFrequency)
    }

    return sum
}