1 var threeSumClosest = function(nums, target) {
2 if (nums.length < 3) {
3 return -1;
4 }
5
6 nums = nums.sort(function(num1, num2) {
7 return num1 - num2;
8 });
9
10 console.log(nums);
11
12 var i, l, r, sum, ret, first = true;
13
14 for (i = 0; i < nums.length - 2; i++) {
15 l = i + 1;
16 r = nums.length - 1;
17
18 while (l < r) {
19 sum = nums[i] + nums[l] + nums[r];
20
21 if (first) {
22 ret = sum;
23 first = false;
24 } else {
25 if (Math.abs(sum - target) < Math.abs(ret - target)) {
26 ret = sum;
27 }
28
29 if (sum === target) {
30 return target;
31 } else if (sum > target) {
32 r--;
33 } else {
34 l++;
35 }
36 }
37 }
38 }
39
40 return ret;
41 };
