[leetcode]4Sum @ Python
原题地址：http://oj.leetcode.com/problems/4sum/ 题意：从数组中找到4个数，使它们的和为target。要求去重，可能有多组解，需要都找出来。 解题思路：一开始想要像3Sum那样去解题，时间复杂度为O(N^3)，可无论怎么写都是Time Limited ...
原文：[LeetCode] 4Sum hash表
Given an arraySofnintegers, are there elementsa,b,c, anddinSsuch thata b c d target Find all unique quadruplets in the array which gives the sum of target. Note: Elements in a quadruplet a,b,c,d must ...
2014-12-10 00:41 0 2633 推荐指数：
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