16. 3Sum Closest

Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integers. You may assume that each input would have exactly one solution.
For example, given array S = {-1 2 1 -4}, and target = 1. The sum that is closest to the target is 2. (-1 + 2 + 1 = 2).

public class Solution {
    public int threeSumClosest(int[] nums, int target) {
        
        long mindiff = Long.MAX_VALUE;
        long closet = 0;
        Arrays.sort(nums);
        
        for(int i=0;itarget)
                      end--;
                   else if(sum

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