最接近的三数之和，代码有误

[silves-xiang]

`
func threeSumClosest(nums []int, target int) int {
if len(nums) == 3 {
return nums[0] + nums[1] + nums[2]
}
sort.Ints(nums)
sum := nums[0] + nums[1] + nums[2]

  for i := 0; i < len(nums); i++ {
	  l := i+1
	  r := len(nums) - 1
	  for l < r {
		  current := nums[i] + nums[l] + nums[r]
		  if math.Abs(float64(sum - target)) > math.Abs(float64(target - current)) {
			  sum = current
		  }
		  if current < target {
			  l++
		  } else if current == target {
			  return target
		  } else {
			  r--
		  }
	  }
  }
  return sum

}

`