In a N x N grid representing a field of cherries, each cell is one of three possible integers. 0 means the cell is empty, so you can pass through; 1 means the cell contains a cherry, that you can pick up and pass through; -1 means the cell contains a…

In a N x N grid representing a field of cherries, each cell is one of three possible integers. 0 means the cell is empty, so you can pass through; 1 means the cell contains a cherry, that you can pick up and pass through; -1 means the cell contains a…

原题链接在这里:https://leetcode.com/problems/cherry-pickup/ 题目: In a N x N grid representing a field of cherries, each cell is one of three possible integers. 0 means the cell is empty, so you can pass through; 1 means the cell contains a cherry, that you c…

In a N x N grid representing a field of cherries, each cell is one of three possible integers. 0 means the cell is empty, so you can pass through; 1 means the cell contains a cherry, that you can pick up and pass through; -1 means the cell contains a…

In a N x N grid representing a field of cherries, each cell is one of three possible integers. 0 means the cell is empty, so you can pass through; 1 means the cell contains a cherry, that you can pick up and pass through; -1 means the cell contains a…

https://leetcode.com/problems/cherry-pickup/description/ In a N x N grid representing a field of cherries, each cell is one of three possible integers. 0 means the cell is empty, so you can pass through; 1 means the cell contains a cherry, that you c…

2020-02-03 17:46:04 问题描述: 问题求解: 非常好的题目,和two thumb其实非常类似,但是还是有个一点区别,就是本题要求最后要到达(n - 1, n - 1),只有到达了(n - 1, n - 1)才算是有效解,two thumb是一定会有解的,所以不用加特别判断. 也是一种路径规划类的题目,难点依然是状态的表示,我们这里使用的p1,p2的坐标位置作为状态. 另外,还需要注意的是在超界的时候,我们需要返回的是Integer.MIN_VALUE,这样就可以规避掉一些中间节…

动态规划Dynamic Programming code教你做人:DP其实不算是一种算法,而是一种思想/思路,分阶段决策的思路 理解动态规划: 递归与动态规划的联系与区别 -> 记忆化搜索 -> 本质:动态规划 什么时候使用动态规划: 使用动态规划的三个条件 1.求最大值最小值/判断是否可行/统计方案个数 2.求所有方案/集合而不是序列 3.把2^n优化成n^2的题目 不使用动态规划的三个条件 1.求出所有具体的方案而非方案个数 2.输入数据是一个集合而不是序列 3.暴力算法的复杂度已经是多项…

［抄题］: 给定一个只含非负整数的m*n网格,找到一条从左上角到右下角的可以使数字和最小的路径. ［思维问题］: ［一句话思路］: 和数字三角形基本相同 ［输入量］:空: 正常情况:特大:特小:程序里处理到的特殊情况:异常情况(不合法不合理的输入): ［画图］: ［一刷］: 行.列的数字是不一样的,要分开算 ［二刷］: ［三刷］: ［四刷］: ［五刷］: [五分钟肉眼debug的结果]: ［总结］: 原点的初始距离是它本身,而不是0.因为点本身就有距离 ［复杂度］:Time complexity…

突然很想刷刷题,LeetCode是一个不错的选择,忽略了输入输出,更好的突出了算法,省去了不少时间. dalao们发现了任何错误,或是代码无法通过,或是有更好的解法,或是有任何疑问和建议的话,可以在对应的随笔下面评论区留言,我会及时处理,在此谢过了. 过程或许会很漫长,也很痛苦,慢慢来吧. 编号 题名 过题率 难度 1 Two Sum 0.376 Easy 2 Add Two Numbers 0.285 Medium 3 Longest Substring Without Repeating C…

645. Set Mismatch The set S originally contains numbers from 1 to n. But unfortunately, due to the data error, one of the numbers in the set got duplicated to another number in the set, which results in repetition of one number and loss of another nu…

All LeetCode Questions List(Part of Answers, still updating) 题目汇总及部分答案(持续更新中) Leetcode problems classified by company 题目按公司分类(Last updated: October 2, 2017) .   Top Interview Questions # Title Difficulty Acceptance 1 Two Sum Medium 17.70% 2 Add Two N…

# Title Solution Acceptance Difficulty Frequency     4 Median of Two Sorted Arrays       27.2% Hard     10 Regular Expression Matching       25.6% Hard     23 Merge k Sorted Lists       35.8% Hard     25 Reverse Nodes in k-Group       37.7% Hard    …

终于将LeetCode的免费题刷完了,真是漫长的第一遍啊,估计很多题都忘的差不多了,这次开个题目汇总贴,并附上每道题目的解题连接,方便之后查阅吧~ 如果各位看官们,大神们发现了任何错误,或是代码无法通过OJ,或是有更好的解法,或是有任何疑问,意见和建议的话,请一定要在对应的帖子下面评论区留言告知博主啊(如果不方便注册博客园的话,可以下载下文提到的APP,在Feedback中给博主发邮件交流哈),同时也请大家踊跃地,大量地,盲目地提供各个题目的follow up一起讨论哈,多谢多谢,祝大家刷得愉快…

Hello everyone, I am a Chinese noob programmer. I have practiced questions on leetcode.com for 2 years. During this time, I studied a lot from many Great Gods' articles. After worship, I always wanted to write an article as they did, and now I take t…

请点击页面左上角 -> Fork me on Github 或直接访问本项目Github地址:LeetCode Solution by Swift    说明:题目中含有$符号则为付费题目. 如:[Swift]LeetCode156.二叉树的上下颠倒 $ Binary Tree Upside Down 请下拉滚动条查看最新 Weekly Contest!!! Swift LeetCode 目录 | Catalog 序        号 题名Title 难度     Difficulty  两数之…

[600] Non-negative Integers without Consecutive Ones [629] K Inverse Pairs Array [638] Shopping Offers [639] Decode Ways II [646] Maximum Length of Pair Chain [647] Palindromic Substrings 给定一个字符串,判断有多少子串是 palindromic 的,子串就算所有字母都相同,但是开始和结束位置的下标不同,也算不同…

The demons had captured the princess (P) and imprisoned her in the bottom-right corner of a dungeon. The dungeon consists of M x N rooms laid out in a 2D grid. Our valiant knight (K) was initially positioned in the top-left room and must fight his wa…

Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right which minimizes the sum of all numbers along its path. Note: You can only move either down or right at any point in time. 这道题跟之前那道Dungeon Game 地牢游戏 没有什么太大的…

There are N piles of stones arranged in a row.  The i-th pile has stones[i] stones. A move consists of merging exactly K consecutive piles into one pile, and the cost of this move is equal to the total number of stones in these K piles. Find the mini…

The demons had captured the princess (P) and imprisoned her in the bottom-right corner of a dungeon. The dungeon consists of M x N rooms laid out in a 2D grid. Our valiant knight (K) was initially positioned in the top-left room and must fight his wa…

Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right which minimizes the sum of all numbers along its path. Note: You can only move either down or right at any point in time. Example: Input: [   [1,3,1], [1,5…

Cherry Tree程序员笔记软件存在严重漏洞 如果你用Cherry Tree来保存自己觉得很重要的东西的时候,你应该注意了 显示漏洞的步骤:(不用使用自己使用Cherry Tree保存的文件来做下面的步骤) 1,开发使用Cherry Tree软件写的带有密码的笔记 2,随便输入一个密码 3,(最重要的一步,当我们不小心时就会发生)点击取消按钮 4,编辑一个节点保存,并编辑一些内容用于测试 5,再打开第一步的文件,在输入正确的密码,你会发现密码错误了 6,在使用EditPlus来打开这个文件,…

Pick-up sticksTime Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 2950 Accepted Submission(s): 1108 Problem DescriptionStan has n sticks of various length. He throws them one at a time on the floor in…

用过几月下来.最终现在还能流畅使用的,就剩下3494 跟 minila了. 想起购买的初衷.cherry是泰斗,红轴轻柔,所以三把全红轴. 之后,觉得携带外出不方便,所以就又入了个MINILA. 再后,则是3494 ESC键功能键区距主键区太遥远,VIM上的用起来太过难受.才弄了个87紧凑的[别问我为什么不用FILCO的,已经有了一个的,当然想尝试一下其他品牌的,再说,网络上风评也不错] 结果阿里洛实在不如人意. 买了三天,CTRL,SHIFT卡键,京东倒是第二天就把货换回来了.但是用到现在,无…

Pick-up sticks Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 7699   Accepted: 2843 Description Stan has n sticks of various length. He throws them one at a time on the floor in a random way. After finishing throwing, Stan tries to find…

Pick-up sticks Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 10330   Accepted: 3833 Description Stan has n sticks of various length. He throws them one at a time on the floor in a random way. After finishing throwing, Stan tries to fin…

Pick-up sticks Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 11335   Accepted: 4250 Description Stan has n sticks of various length. He throws them one at a time on the floor in a random way. After finishing throwing, Stan tries to fin…

Pick-up sticks Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 12861   Accepted: 4847 Description Stan has n sticks of various length. He throws them one at a time on the floor in a random way. After finishing throwing, Stan tries to fin…

Pick-up sticks Stan has n sticks of various length. He throws them one at a time on the floor in a random way. After finishing throwing, Stan tries to find the top sticks, that is these sticks such that there is no stick on top of them. Stan has noti…