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题目：
题解：
func totalHammingDistance(nums []int) (ans int) {n := len(nums)for i := 0; i < 30; i++ {c := 0for _, val := range nums {c += val >> i & 1}ans += c * (n - c)}return
}
题目：
题解：
func totalHammingDistance(nums []int) (ans int) {n := len(nums)for i := 0; i < 30; i++ {c := 0for _, val := range nums {c += val >> i & 1}ans += c * (n - c)}return
}