size函数只能用于计算array,不能用于计算list,返回的是数组的元素个数 len函数既可以计算array,也可以计算list >>> a = np.array([1,2]) >>> len(a) 2 >>> a.size 2 >>> a = np.array([[1,2],[3,4]]) >>> len(a) 2 >>> a.size 4 >>> a = np.array(…

Given an array of n positive integers and a positive integer s, find the minimal length of a subarray of which the sum ≥ s. If there isn't one, return 0 instead. For example, given the array [2,3,1,2,4,3] and s = 7,the subarray [4,3] has the minimal…

Given an array of n positive integers and a positive integer s, find the minimal length of a subarray of which the sum ≥ s. If there isn't one, return 0 instead. For example, given the array [2,3,1,2,4,3] and s = 7,the subarray [4,3] has the minimal…

题意 Given an array of n positive integers and a positive integer s, find the minimal length of a subarray of which the sum ≥ s. If there isn't one, return 0 instead. For example, given the array [2,3,1,2,4,3] and s = 7, the subarray [4,3] has the mini…

Given an array of n positive integers and a positive integer s, find the minimal length of a contiguous subarray of which the sum ≥ s. If there isn't one, return 0 instead. Example: Input: s = 7, nums = [2,3,1,2,4,3] Output: 2 Explanation: the subarr…

继承leetcode123以及leetcode309的思路,,但应该也可以写成leetcode 152. 乘积最大子序列的形式 class Solution { public: int maxProfit(vector<int>& prices, int fee) { int len=prices.size(); ) ; vector<]-fee); vector<); ; ;i<len;i++){ int p=prices[i]; buy[i]=max(buy[i-…

泛型是一种编程范式(Programming Paradigm),是为了效率和重用性产生的.由Alexander Stepanov(C++标准库主要设计师)和David Musser(伦斯勒理工学院CS名誉教授)首次提出,自实现始,就成为了ANSI/ISO C++重要标准之一. Java自1.5版本开始提供泛型,其本质是一个参数化的类型,那么,何谓参数化? 参数是一个外部变量.设想一个方法,其参数的名称和实际的数值是外部传入的,那么,该参数的类型是否也作为一个参数,在运行时决定呢?这就是泛型的作用…

更多MyCat源码分析,请戳MyCat源码分析系列 结果合并 在SQL下发流程和前后端验证流程中介绍过,通过用户验证的后端连接绑定的NIOHandler是MySQLConnectionHandler实例,在MySQL服务端返回执行结果时会调用到MySQLConnecionHandler.handleData(),用于不同类型的处理派发: protected void handleData(byte[] data) { switch (resultStatus) { case RESULT_STA…

萌新做词典第二篇,做得不好,还请指正,谢谢大佬! 做好了插入与遍历功能之后,我发现最基本的查找功能没有实现,同时还希望能够把内存的数据存入文件保存下来,并可以从文件中导入词典.此外,数据的路径是存在配置文件中的.甚至,还想尝试类似自动补全的功能.当然了,是做一个比较low的补全,比如传入"编程",能够得到"软件"."学习"."学习网站"."入门"四个字符串.但是传入"编"不会得到&quo…

Given a list of words (without duplicates), please write a program that returns all concatenated words in the given list of words. A concatenated word is defined as a string that is comprised entirely of at least two shorter words in the given array.…