replace (list.begin(), list.end(), , ); // replace any elements with value of 0 by 42 replace算法对输入序列作读写操作,将序列中特定的值替换为新的值. vector<int> ivec; replace_copy (ilst.begin(), ilst.end(), back_inserter(ivec), , ); replace_copy对输入序列的元素进行处理,但不修改原来的元素,而是创建一个新序
How many people give up, because of YOU. Continue... 先实践,最后需要总结. 1. 数据流中的数据按照一定的格式<T>提取 -------> 放在vector中. 2. 注意 vector.begin(), vector.front()的区别. 3. accumulate()求sum.(与valarrary貌似有一拼,孰优孰劣?---- 可能后者效率更高) 4. multiplies<int>() c++ -->
Given an unsorted array of integers, find the length of the longest consecutive elements sequence. For example,Given [100, 4, 200, 1, 3, 2],The longest consecutive elements sequence is [1, 2, 3, 4]. Return its length: 4. Your algorithm should run in
Iterator definitions An iterator is any object that, pointing to some element in a range of elements (such as an array or a container), has the ability to iterate through the elements of that range using a set of operators (with at least the incremen
<C++ Primer 4th>读书笔记 标准容器(the standard container)定义了很少的操作.标准库并没有为每种容器类型都定义实现这些操作的成员函数,而是定义了一组泛型算法:因为它们实现共同的操作,所以称之为“算法”:而“泛型”指的是它们可以操作在多种容器类型上——不但可作用于 vector 或 list 这些标准库类型,还可用在内置数组类型.甚至其他类型的序列上. 标准算法固有地独立于类型,与容器的类型无关:在前面的描述中,没有任何内容依赖于容器类型.这种算法只在一点上
Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target? Find all unique quadruplets in the array which gives the sum of target. 解题思路一: 四路夹逼,C++: class Solution { public: vector<vector<int> > fou