Given the running logs of n functions that are executed in a nonpreemptive single threaded CPU, find the exclusive time of these functions. Each function has a unique id, start from 0 to n-1. A function may be called recursively or by another functio…

Given the running logs of n functions that are executed in a nonpreemptive single threaded CPU, find the exclusive time of these functions. Each function has a unique id, start from 0 to n-1. A function may be called recursively or by another functio…

636. Exclusive Time of Functions 1.Problem Given the running logs of n functions that are executed in a nonpreemptive single threaded CPU, find the exclusive time of these functions. Each function has a unique id, start from 0 to n-1. A function may…

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 栈 日期 题目地址:https://leetcode.com/problems/exclusive-time-of-functions/description/ 题目描述 Given the running logs of n functions that are executed in a nonpreemptive single threaded…

题目如下: 解题思路:本题和括号匹配问题有点像,用栈比较适合.一个元素入栈前,如果自己的状态是“start”,则直接入栈:如果是end则判断和栈顶的元素是否id相同并且状态是“start”,如果满足这两个条件,则说明这个元素和栈顶的元素是配对的,栈顶元素出栈.但是这个函数的的执行时间却不能简单的用end-start,因为这个函数里面可以还调用了其他函数,需要减去这些内部调用函数的执行时间,这里就需要引入一个新的变量来保存内部调用函数的执行时间.这个时间也很好求,函数完成配对后,栈顶元素出栈,只要…

［抄题］: Given the running logs of n functions that are executed in a nonpreemptive single threaded CPU, find the exclusive time of these functions. Each function has a unique id, start from 0 to n-1. A function may be called recursively or by another f…

// TODO: need improve!!! class Log { public: int id; bool start; int timestamp; int comp; // compasation Log() { id = ; timestamp = ; comp = ; start = false; } }; class Solution { public: vector<int> exclusiveTime(int n, vector<string>& lo…

Given the running logs of n functions that are executed in a nonpreemptive single threaded CPU, find the exclusive time of these functions. Each function has a unique id, start from 0 to n-1. A function may be called recursively or by another functio…

Given the running logs of n functions that are executed in a nonpreemptive single threaded CPU, find the exclusive time of these functions. Each function has a unique id, start from 0 to n-1. A function may be called recursively or by another functio…

On a single threaded CPU, we execute some functions.  Each function has a unique id between 0 and N-1. We store logs in timestamp order that describe when a function is entered or exited. Each log is a string with this format: "{function_id}:{"s…

636. 函数的独占时间 给出一个非抢占单线程CPU的 n 个函数运行日志,找到函数的独占时间. 每个函数都有一个唯一的 Id,从 0 到 n-1,函数可能会递归调用或者被其他函数调用. 日志是具有以下格式的字符串:function_id:start_or_end:timestamp.例如:"0:start:0" 表示函数 0 从 0 时刻开始运行."00" 表示函数 0 在 0 时刻结束. 函数的独占时间定义是在该方法中花费的时间,调用其他函数花费的时间不算该函数…

2018-04-28 14:10:33 问题描述: 问题求解: 个人觉得这是一条很好的模拟题,题目大意就是给了一个单线程的处理器,在处理器上跑一个函数,但是函数里存在调用关系,可以是调用其他函数,也可以是递归的调用自己,通过logs给出每个函数的开始和结束时间,问每个函数的实际运行时间是多少.logs是按时间戳的顺序给的,并非按照函数名,最后的结果需要按照函数名的大小排序后给. 为什么说这是一条模拟题呢,因为函数的调用关系本质上就是栈中的压栈出栈,使用栈这个数据结构能够很好的模拟函数的调用关系,…

函数的独占时间 给出一个非抢占单线程CPU的 n 个函数运行日志,找到函数的独占时间. 每个函数都有一个唯一的 Id,从 0 到 n-1,函数可能会递归调用或者被其他函数调用. 日志是具有以下格式的字符串:function_id:start_or_end:timestamp.例如:"0:start:0" 表示函数 0 从 0 时刻开始运行."0:end:0" 表示函数 0 在 0 时刻结束. 函数的独占时间定义是在该方法中花费的时间,调用其他函数花费的时间不算该函数…

463. Island Perimeterhttps://leetcode.com/problems/island-perimeter/就是逐一遍历所有的cell,用分离的cell总的的边数减去重叠的边的数目即可.在查找重叠的边的数目的时候有一点小技巧,就是沿着其中两个方向就好,这种题目都有类似的规律,就是可以沿着上三角或者下三角形的方向来做.一刷一次ac,但是还没开始注意codestyle的问题,需要再刷一遍. class Solution { public: int islandPerime…

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…

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…

All LeetCode Questions List 题目汇总 Sorted by frequency of problems that appear in real interviews. Last updated: October 2, 2017Google (214)534 Design TinyURL388 Longest Absolute File Path683 K Empty Slots340 Longest Substring with At Most K Distinct C…

源代码地址:https://github.com/hopebo/hopelee 语言:C++ 517. Super Washing Machines You have n super washing machines on a line. Initially, each washing machine has some dresses or is empty. For each move, you could choose any m (1 ≤ m ≤ n) washing machines,…

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…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 把自己刷过的所有题目做一个整理,并且用简洁的语言概括了一下思路,汇总成了一个表格. 题目的排列顺序是按照先Easy再Medium再Hard排列的,暂时还没有把题目全部整理完成.后序我会把刷过的所有的题目都整理到这个文档里. 题目 难度 解法 题目地址 566. Reshape the Matrix Easy 变长数组,求余法,维护行列计算在新的数组中的位置 https://blog.c…

堆栈基础 堆栈(stack)具有“后进先出”的特性,利用这个特性我们可以用堆栈来解决这样一类问题:后续的输入会影响到前面的阶段性结果.线性地遍历输入并用stack处理,这类问题较简单,求解时间复杂度一般为O(n). 相关LeetCode题: 13. Roman to Integer  题解 20. Valid Parentheses  题解 844. Backspace String Compare  题解 1047. Remove All Adjacent Duplicates In Stri…

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…

[20]Valid Parentheses (2018年11月28日,复习, ko) 给了一个字符串判断是不是合法的括号配对. 题解:直接stack class Solution { public: bool isValid(string s) { set<char> st{'(', '[', '{'}; map<char, char> mp{{'(', ')'}, {'{', '}'}, {'[', ']'}}; stack<char> stk; for (auto…

2. Built-in Functions https://docs.python.org/3.4/library/functions.html?highlight=file The Python interpreter has a number of functions and types built into it that are always available. They are listed here in alphabetical order.     Built-in Funct…

Given a 2D matrix matrix, find the sum of the elements inside the rectangle defined by its upper left corner (row1, col1) and lower right corner (row2, col2). Range Sum Query 2D The above rectangle (with the red border) is defined by (row1, col1) = (…

Prolbem link: http://oj.leetcode.com/problems/single-number/ This prolbem can be solved by using XOR(exclusive OR) operation. Let x, y, and z be any numbers, and XOR has following properties: x XOR 0 is itself, i.e. x XOR 0 = 0; x XOR x is 0, i.e. x…

Problem link: http://oj.leetcode.com/problems/evaluate-reverse-polish-notation/ According to the wiki page, the algorithm for evaluating any postfix expression is fairly straightforward. The following is the pseudo-code for evaluating a postfix expre…

刷题备忘录,for bug-free leetcode 396. Rotate Function 题意: Given an array of integers A and let n to be its length. Assume Bk to be an array obtained by rotating the array A k positions clock-wise, we define a "rotation function" F on A as follow: F(k…

You are given a binary tree in which each node contains an integer value. Find the number of paths that sum to a given value. The path does not need to start or end at the root or a leaf, but it must go downwards (traveling only from parent nodes to…

Find the sum of all left leaves in a given binary tree. Example: 3 / \ 9 20 / \ 15 7 There are two left leaves in the binary tree, with values 9 and 15 respectively. Return 24. 题目标签:Tree 这道题目给了我们一个二叉树,让我们找到所有左子叶之和.这里需要另外一个function - sumLeftLeaves 还要一…