You're now a baseball game point recorder. Given a list of strings, each string can be one of the 4 following types: Integer (one round's score): Directly represents the number of points you get in this round. "+" (one round's score): Represents…

［抄题］: You're now a baseball game point recorder. Given a list of strings, each string can be one of the 4 following types: Integer (one round's score): Directly represents the number of points you get in this round. "+" (one round's score): Repr…

You're now a baseball game point recorder. Given a list of strings, each string can be one of the 4 following types: Integer (one round's score): Directly represents the number of points you get in this round. "+" (one round's score): Represents…

题目要求 You're now a baseball game point recorder. Given a list of strings, each string can be one of the 4 following types: Integer (one round's score): Directly represents the number of points you get in this round. "+" (one round's score): Repre…

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 使用栈模拟 日期 题目地址:https://leetcode.com/problems/baseball-game/description/ 题目描述 You're now a baseball game point recorder. Given a list of strings, each string can be one of the 4…

problem 682. Baseball Game solution: 没想到使用vector! class Solution { public: int calPoints(vector<string>& ops) { vector<int> v; for(auto ch:ops) { ]);//err. *v.back()); else if(ch=="C") v.pop_back(); else v.push_back(stoi(ch)); }…

682. 棒球比赛 你现在是棒球比赛记录员. 给定一个字符串列表,每个字符串可以是以下四种类型之一: 1.整数(一轮的得分):直接表示您在本轮中获得的积分数. 2. "+"(一轮的得分):表示本轮获得的得分是前两轮有效 回合得分的总和. 3. "D"(一轮的得分):表示本轮获得的得分是前一轮有效 回合得分的两倍. 4. "C"(一个操作,这不是一个回合的分数):表示您获得的最后一个有效 回合的分数是无效的,应该被移除. 每一轮的操作都是永久性的,…

You're now a baseball game point recorder. Given a list of strings, each string can be one of the 4 following types: Integer (one round's score): Directly represents the number of points you get in this round. "+" (one round's score): Represents…

Given n balloons, indexed from 0 to n-1. Each balloon is painted with a number on it represented by array nums. You are asked to burst all the balloons. If the you burst balloon i you will get nums[left] * nums[i] * nums[right] coins. Here left and r…

According to the Wikipedia's article: "The Game of Life, also known simply as Life, is a cellular automaton devised by the British mathematician John Horton Conway in 1970." Given a board with m by n cells, each cell has an initial state live (1…

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…

You are playing the following Flip Game with your friend: Given a string that contains only these two characters: + and -, you and your friend take turns to flip twoconsecutive "++" into "--". The game ends when a person can no longer…

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…

一.题目描述 根据百度百科,生命游戏,简称为生命,是英国数学家约翰·何顿·康威在1970年发明的细胞自动机. 给定一个包含 m × n 个格子的面板,每一个格子都可以看成是一个细胞.每个细胞具有一个初始状态 live(1)即为活细胞, 或 dead(0)即为死细胞.每个细胞与其八个相邻位置(水平,垂直,对角线)的细胞都遵循以下四条生存定律: 如果活细胞周围八个位置的活细胞数少于两个,则该位置活细胞死亡: 如果活细胞周围八个位置有两个或三个活细胞,则该位置活细胞仍然存活: 如果活细胞周围八个位置有…

Alex and Lee play a game with piles of stones.  There are an even number of piles arranged in a row, and each pile has a positive integer number of stones piles[i]. The objective of the game is to end with the most stones.  The total number of stones…

There is a list of sorted integers from 1 to n. Starting from left to right, remove the first number and every other number afterward until you reach the end of the list. Repeat the previous step again, but this time from right to left, remove the ri…

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 an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your maximum jump length at that position. Determine if you are able to reach the last index. Example 1: Input…

你现在是棒球比赛记录员. 给定一个字符串列表,每个字符串可以是以下四种类型之一: 1.整数(一轮的得分):直接表示您在本轮中获得的积分数. 2. "+"(一轮的得分):表示本轮获得的得分是前两轮有效 回合得分的总和. 3. "D"(一轮的得分):表示本轮获得的得分是前一轮有效 回合得分的两倍. 4. "C"(一个操作,这不是一个回合的分数):表示您获得的最后一个有效 回合的分数是无效的,应该被移除. 每一轮的操作都是永久性的,可能会对前一轮和后一…

810. 黑板异或游戏 一个黑板上写着一个非负整数数组 nums[i] .小红和小明轮流从黑板上擦掉一个数字,小红先手.如果擦除一个数字后,剩余的所有数字按位异或运算得出的结果等于 0 的话,当前玩家游戏失败. (另外,如果只剩一个数字,按位异或运算得到它本身:如果无数字剩余,按位异或运算结果为 0.) 换种说法就是,轮到某个玩家时,如果当前黑板上所有数字按位异或运算结果等于 0,这个玩家获胜. 假设两个玩家每步都使用最优解,当且仅当小红获胜时返回 true. 示例: 输入: nums = [1…

亚历克斯和李用几堆石子在做游戏.偶数堆石子排成一行,每堆都有正整数颗石子 piles[i] . 游戏以谁手中的石子最多来决出胜负.石子的总数是奇数,所以没有平局. 亚历克斯和李轮流进行,亚历克斯先开始. 每回合,玩家从行的开始或结束处取走整堆石头. 这种情况一直持续到没有更多的石子堆为止,此时手中石子最多的玩家获胜. 假设亚历克斯和李都发挥出最佳水平,当亚历克斯赢得比赛时返回 true ,当李赢得比赛时返回 false . 示例: 输入:[5,3,4,5] 输出:true 解释: 亚历克斯先开始…

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…

static int wing=[]() { std::ios::sync_with_stdio(false); cin.tie(NULL); ; }(); class Solution { public: int calPoints(vector<string>& ops) { ; int sz=ops.size(); vector<,INT_MIN); for(string &s:ops) { ]=='+') { sore[lastvalid]=sore[lastva…

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…

解答(打败98.60%) class Solution { public: int calPoints(vector<string>& ops) { vector<int> v; int sum=0; for(auto it=ops.begin();it!=ops.end();++it){ if(*it=="+"){ auto last=v.rbegin(); auto second=++v.rbegin(); int num=(*last)+(*sec…

Given an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your maximum jump length at that position. Your goal is to reach the last index in the minimum number of jumps…

题目 给定一个非负整数数组,你最初位于数组的第一个位置. 数组中的每个元素代表你在该位置可以跳跃的最大长度. 判断你是否能够到达最后一个位置. 思路 贪心算法:记录每一个位置能够跳跃到的最远距离,如果超过前者的距离则更新,如果不能则保留原距离.注意,在跳跃的时候,要确保当前位置是可达的,即是在最远距离内的. 实现 class Solution: def canJump(self, nums: List[int]) -> bool: maxjump = 0 for i in range(len(n…

Given an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your maximum jump length at that position. Your goal is to reach the last index in the minimum number of jumps…

You are playing the following Flip Game with your friend: Given a string that contains only these two characters: + and -, you and your friend take turns to flip two consecutive "++" into "--". The game ends when a person can no longer…