You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 stones. The one who removes the last stone will be the winner. You will take the first turn to remove th…

lc 292 Nim Game 292 Nim Game You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 stones. The one who removes the last stone will be the winner. You will tak…

变型:如果是最后拿走所有石子那个人输,则f[0] = true 394. Coins in a Line dp[n]表示n个石子,先手的人,是必胜还是必输.拿1个石子,2个石子之后都是必胜,则当前必败:拿1个石子,2个石子之后都是必败,则当前必胜:如果拿1个石子,2个石子之后有必败,则当前必胜. class Solution { public: /** * @param n: An integer * @return: A boolean which equals to true if the…

292. Nim 游戏 你和你的朋友,两个人一起玩 Nim 游戏:桌子上有一堆石头,每次你们轮流拿掉 1 - 3 块石头. 拿掉最后一块石头的人就是获胜者.你作为先手. 你们是聪明人,每一步都是最优解. 编写一个函数,来判断你是否可以在给定石头数量的情况下赢得游戏. 示例: 输入: 4 输出: false 解释: 如果堆中有 4 块石头,那么你永远不会赢得比赛: 因为无论你拿走 1 块.2 块 还是 3 块石头,最后一块石头总是会被你的朋友拿走. 巴什博奕,n%(m+1)!=0时,先手总是会赢的…

You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 stones. The one who removes the last stone will be the winner. You will take the first turn to remove th…

Problem: You are playing the following Nim Game with your friend: There to stones. The one who removes the last stone will be the winner. You will take the first turn to remove the stones. Both of you are very clever and have optimal strategies for t…

问题描述: You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 stones. The one who removes the last stone will be the winner. You will take the first turn to rem…

You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 stones. The one who removes the last stone will be the winner. You will take the first turn to remove th…

题目要求 You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 stones. The one who removes the last stone will be the winner. You will take the first turn to remo…

You have a total of n coins that you want to form in a staircase shape, where every k-th row must have exactly k coins. Given n, find the total number of full staircase rows that can be formed. n is a non-negative integer and fits within the range of…

翻译 你正在和你的朋友们玩以下这个Nim游戏:桌子上有一堆石头.每次你从中去掉1-3个.谁消除掉最后一个石头即为赢家.你在取出石头的第一轮. 你们中的每个人都有着聪明的头脑和绝佳的策略.写一个函数来确定对于给定的数字是否你能够赢得这场比赛. 比如,假设堆中有4个石头,那么你永远也无法赢得比赛:不管你移除了1.2或3个石头,最后一个石头都会被你的朋友所移除. 原文 You are playing the following Nim Game with your friend: There is a…

Given a non-negative integer num, repeatedly add all its digits until the result has only one digit. Example: Input: 38 Output: 2 Explanation: The process is like: 3 + 8 = 11, 1 + 1 = 2.   Since 2 has only one digit, return it. Follow up:Could you do…

题目: You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 stones. The one who removes the last stone will be the winner. You will take the first turn to remov…

你和你的朋友,两个人一起玩 Nim 游戏:桌子上有一堆石头,每次你们轮流拿掉 1 - 3 块石头. 拿掉最后一块石头的人就是获胜者.你作为先手. 你们是聪明人,每一步都是最优解. 编写一个函数,来判断你是否可以在给定石头数量的情况下赢得游戏. 示例: 输入: 4输出: false 解释: 如果堆中有 4 块石头,那么你永远不会赢得比赛:  因为无论你拿走 1 块.2 块 还是 3 块石头,最后一块石头总是会被你的朋友拿走. class Solution: def canWinNim(self,…

class Solution {public:    bool canWinNim(int n) {        return n % 4 != 0;    }};…

Given an integer, return its base 7 string representation. Example 1: Input: 100 Output: "202" Example 2: Input: -7 Output: "-10" Note: The input will be in range of [-1e7, 1e7]. 不停除以7, 然后把余数放到ans里面, 最后reverse ans加上符号即可. Code class Sol…

There are 1000 buckets, one and only one of them contains poison, the rest are filled with water. They all look the same. If a pig drinks that poison it will die within 15 minutes. What is the minimum amount of pigs you need to figure out which bucke…

344. Reverse String /** * @param {string} s * @return {string} */ var reverseString = function(s) { return s.split("").reverse().join(""); }; 292. Nim Game 尼姆游戏还是很有意思的,这题有很多地方可以深入理解 /** * @param {number} n * @return {boolean} */ var ca…

problem 292. Nim Game solution class Solution { public: bool canWinNim(int n) { ; } }; 来generalize一下这道题,当可以拿1-n个石子时,那么个数为(n+1)的整数倍时一定会输,我们试着证明一下这个结论,若当前共有m*(n+1)个石子,那么: 当m=1时,即剩n+1个的时候,肯定会输,因为不管你取1-n中的任何一个数字,另一个人都可以取完. 当m>1时,即有m*(n+1)的时候,不管你先取1-n中的任何…

Question 292. Nim Game Solution 思路:试着列举一下,就能发现一个n只要不是4的倍数,就能赢. n 是否能赢 1 true 2 true 3 true 4 false 不论删除几,对方都能一把赢 5 true 删除1,还剩4,对方先手,对方输 6 true 删除2,还剩4,对方先手,对方输 7 true 删除3,还剩4,对方先手,对方输 8 false 不论删除几,都能被对方造成还剩4,已方先手,我们就输 9 true 10 true Java实现: public…

292. Nim Game You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 stones. The one who removes the last stone will be the winner. You will take the first tur…

292. Nim Game(C++) You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 stones. The one who removes the last stone will be the winner. You will take the firs…

Given a 2D board containing 'X' and 'O' (the letter O), capture all regions surrounded by 'X'. A region is captured by flipping all 'O's into 'X's in that surrounded region. Example: X X X X X O O X X X O X X O X X After running your function, the bo…

Given two non-negative integers num1 and num2 represented as string, return the sum of num1 and num2. Note: The length of both num1 and num2 is < 5100. Both num1 and num2 contains only digits 0-9. Both num1 and num2 does not contain any leading zero.…

292. Nim游戏 class Solution(object): def canWinNim(self, n): """ :type n: int :rtype: bool """ return n % 4 != 0 # return not (n%4==0) """ 你和你的朋友,两个人一起玩 Nim游戏:桌子上有一堆石头,每次你们轮流拿掉 1 - 3 块石头. 拿掉最后一块石头的人就是获胜者.你作为先手. 你…

最近闲来无事刷LeetCode,发现这道题的Accept Rate还是挺高的,尝试着做了一下,结果悲剧了,把过程写下来,希望能长点记性.该题的描述翻译成中文如下: 你正在和你的朋友玩尼姆游戏(Nim Game): 桌子上有一堆石块,你和你的朋友轮流去拿这些石块,每次只能拿1块.2块或者3块.在石块被拿光前,最后一次拿到石块的人获胜.你将首先去拿这些石块. 你和你的朋友都非常聪明,并且拥有应对该游戏的最佳策略.写一个函数来决定在给定石块数量的情况下,你是否能够获胜.比如:如果桌子上有4块石块,那么…

最近闲来无事刷LeetCode,发现这道题的Accept Rate还是挺高的,尝试着做了一下,结果悲剧了,把过程写下来,希望能长点记性.该题的描述翻译成中文如下: 你正在和你的朋友玩尼姆游戏(Nim Game): 桌子上有一堆石块,你和你的朋友轮流去拿这些石块,每次只能拿1块.2块或者3块.在石块被拿光前,最后一次拿到石块的人获胜.你将首先去拿这些石块. 你和你的朋友都非常聪明,并且拥有应对该游戏的最佳策略.写一个函数来决定在给定石块数量的情况下,你是否能够获胜.比如:如果桌子上有4块石块,那么…

一天一道LeetCode 从今天开始,调整规律,不按顺序做,从easy开始! 本系列文章已全部上传至我的github,地址:ZeeCoder's Github 欢迎大家关注我的新浪微博,我的新浪微博 欢迎转载,转载请注明出处 (一)题目 You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to…

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 日期 题目地址:https://leetcode.com/problems/nim-game/ Total Accepted: 66290 Total Submissions: 125590 Difficulty: Easy 题目描述 You are playing the following Nim Game with your friend: T…

You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 stones. The one who removes the last stone will be the winner. You will take the first turn to remove th…