摘要： 题目描述： Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target? Find all unique quadruplets in the arra 阅读全文

摘要： 题目描述： 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 int 阅读全文