2. Which header file is required to use forward_list in C++? A. <list> B. <vector> C. <forward_list> D. <deque> Show Answer Advertisement - This is a modal window. No compatible source was found for this media. 3. What is the time complexity of inserting an element at ...
push_front() is used to push/insert an element or a value in the front or at the beginnig of the forward_list. When we use this function the first element which is already in the container becomes the second, and the element pushed becomes the first element of the forward_list ...
forward_list::cbefore_begin() in C++ STL forward_list::cbefore_begin() 是 CPP STL 中的一个内置函数,它返回一个常量随机访问迭代器,该迭代器指向 forward_list 第一个元素之前的位置。这个函数得到的迭代器可以用来在容器中进行迭代,但不能用来修改它所指向的对象的内容,即使对象本身不是常量。 语法: fo...
1,forward_list容器的使用,对应代码里的test1 2,resize的使用,对应代码里的test2 3,容器的插入删除操作后的注意事项,对应代码里的test3 #include<iostream>#include<vector>#include<string>#include<list>#include<forward_list>#include<deque>using namespacestd;intmain(){//test1 forward_list容器的使用//inser...
forwardlist_name.reverse() 参数:该函数不接受任何参数。 返回值:该函数没有返回值。它将反向转发列表。 下面的程序演示了以上函数: 程序1: // C++ program to illustrate the//reverse() function#include<bits/stdc++.h>usingnamespacestd;intmain(){// initialising forward listforward_list<int> forward ...
forward_list::erase_after() erase-after()函数用于从指定位置或范围旁边的容器中删除元素。 用法: 1.flistname.erase_after(position)2.flistname.erase_after(startingposition,endingposition)参数:Position previous of the element to be removed in the form of iterator. ...
forward_list<string> c; char buf[10];clock_t timeStart = clock(); for(long i=0; i< value; ++i) { try { snprintf(buf, 10, "%d", rand()); c.push_front(string(buf)); //由于效率原因,forward_list不提供push_back方法
init-initializer list to initialize the elements of the container with rg-acontainer compatible range, that is, aninput_rangewhose elements are convertible toT Complexity 1,2)Constant. 3,4)Linear incount. 5)Linear in distance betweenfirstandlast. ...
std::forward_list iterator before_begin()noexcept; (C++11 起) const_iterator before_begin()constnoexcept; (C++11 起) const_iterator cbefore_begin()constnoexcept; (C++11 起) 返回指向首元素前一元素的迭代器。此元素表现为占位符,试图访问它会导致未定义行为。仅有的使用情况是在函数insert_after()、...
- typedef typename C::value_type T; C c1; for (int i = 0; i < N; ++i) c1.push_front(i); @@ -52,7 +52,7 @@ int main() for (int i = 0; i < 10; ++i) for (int j = 0; j < 10; ++j) test<std::forward_list<int> >(i, j); ...