LeetCode 16 最接近的三数之和

编程语言：Java
题目链接：https://leetcode-cn.com/problems/3sum-closest/
题解：最开始是暴力的，看了题解觉得自己是**
难度：Medium
结果：

class Solution {
    public int threeSumClosest(int[] nums, int target) {
        Arrays.sort(nums);
        int res = nums[0] + nums[1] + nums[2];
        for (int i = 0; i < nums.length; i++) {
            int start = i + 1, end = nums.length - 1;
            while (start < end) {
                int sum = nums[i] + nums[start] + nums[end];
                if (Math.abs(target - res) > Math.abs(target - sum))
                    res = sum;
                if (sum > target)
                    end--;
                else if (sum < target)
                    start++;
                else
                    return sum;
            }

        }
        return res;
    }
}