题目：
Given an array S of n integers, are there elements a,b,c in S such that a + b + c = 0? Find all unique triplets
in the array which gives the sum of zero.
Note:
• Elements in a triple
Given an array S of n integers, are there elements a, b, c in S such that a + b + c =
0? Find all unique triplets in the array which gives the sum of zero.
Note: The solution
【题目】
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 eac
Four Sum || LeetCode-18
Problem link：https://leetcode.com/problems/4sum/#/description
Given an array S of n integers, are there elements a, b, c,
and d in S such that a + b +
