[LeetCode]4Sum

原题Given an array nums of n integers and an integer target, are there elements a, b, c, and d in nums such that a + b + c + d = target? Find all unique quadruplets in the array which gives the sum of target.NoteThe solution set must not contain duplicate quadruplets.ExampleGiven array nums = [1, 0, -1, 0, -2, 2], and target = 0.A solution set is[-1, 0, 0, 1][-2, -1, 1, 2][-2, 0, 0, 2题解本题的... Read More