ThreeSum.java

import java.util.ArrayList;
import java.util.List;

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// Given an array nums of n integers, are there elements a, b, c in nums such that a + b + c = 0? Find all unique triplets in the array which gives the sum of zero.

// Note:

// The solution set must not contain duplicate triplets.

// Example:

// Given array nums = [-1, 0, 1, 2, -1, -4],

// A solution set is:
// [
//   [-1, 0, 1],
//   [-1, -1, 2]
// ]


class Solution {
  public List<List<Integer>> threeSum(int[] nums) {
    ArrayList<List<Integer>> result = new ArrayList<>();
    
    return result;
  }
}