[称号] Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below. For example, given the following triangle [ [], [,4], [6,,7], [4,,8,3] ] The minimum path sum from top to bottom is 11 (…

Triangle Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below. For example, given the following triangle[     [2],    [3,4],   [6,5,7],  [4,1,8,3]]The minimum path sum from top to…

https://oj.leetcode.com/problems/merge-k-sorted-lists/ 归并K已经整理阵列,和分析算法的复杂. 解决报告:无论是不考虑优化,最简单的实现是要重新走路List<ListNode>.对当中每一个链表同当前链表做一遍类似于归并排序最后一步的merge操作. 算法复杂度是O(KN) public class Solution { ListNode mergeTwoLists(ListNode list1, ListNode list2) { Lis…

[LeetCode]120. Triangle 解题报告(Python) 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址https://leetcode.com/problems/triangle/description/ 题目描述: Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjac…

Permutations Given a collection of numbers, return all possible permutations. For example,[1,2,3] have the following permutations:[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2], and [3,2,1]. SOLUTION 1: 经典的递归回溯题目,一次ACCEPT. 请也参考上一个题目LeetCode: Combination…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 Java解法 Python解法 日期 [LeetCode] 题目地址:https://leetcode.com/problems/pascals-triangle/ Total Accepted: 83023 Total Submissions: 247907 Difficulty: Easy 题目描述 Given a non-negative in…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 排序 日期 题目地址:https://leetcode.com/problems/largest-perimeter-triangle/ 题目描述 Given an array A of positive lengths, return the largest perimeter of a triangle with non-zero area, f…

这个问题是我目前的知识回答,不来,只有良好的网上搜索解决方案,发现 K Sum 它是一类问题,但是,互联网是没有更简洁的代码,我想对于谁刚开始学习的人.您可能仍然想看看这个问题该怎么解决,然后看看他们的利益扩展它. [称号] 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 give…

题目要求 Given an array A of positive lengths, return the largest perimeter of a triangle with non-zero area, formed from 3 of these lengths. If it is impossible to form any triangle of non-zero area, return 0. 题目分析及思路 给定一个正整数数组,要求返回由这些数所能组成的周长最长且面积非零的三角…

Pascal's Triangle Given numRows, generate the first numRows of Pascal's triangle. For example, given numRows = 5,Return [ [1], [1,1], [1,2,1], [1,3,3,1], [1,4,6,4,1] ] SOLUTION 1:很easy的题.注意记得把List加到ret中.比较简单,每一行的每一个元素有这个规律:1. 左右2边的是1.i, j 表示行,列坐标.2.…