vector<int>::iterator result = find( L.begin( ), L.end( ), 3 ); //查找3 if ( result == L.end( ) ) //没找到 cout << "No" << endl; else //找到 cout << "Yes" << endl; } 记着要包含algorithm这一头文件,其定义了find这一函数。 资料参考:https://www.coonote.com/cplusplus-note/vector-find.html
vector<conststring*> finds = {}; What a function of? for(constauto& ref : finds) Nov 12, 2019 at 10:40pm keskiverto(10409) victoriowrote: I need to findasubstring. @malibor: Aword was requested, and that is what find_if() returns: first "valid" word (or none). ...
First, this program imports all the necessary header files such as <iostream> and <vector>. After this, a vector is declared with few elements. On executing the code, the size of the vector is printed using the size() function. Example #2 CPP program that uses size() function in vector...
g++ testday.cpp -o testday 编译一个测试文件,结果报出以下的错误。 testday.cpp: In member function ‘void Subject::detach(std::shared_ptr<Observer>)’: testday.cpp:43:73: error: no matching function for call to ‘find(std::vector<std::shared_ptr<Observer> >::iterator, std::vector<st...
#include <vector> #include <iomanip> usingnamespacestd; voidprint(inta[],intlen) { for(inti=0;i<len;i++) { cout<<setw(2)<<a[i]<<" "; } cout<<endl; } intmain() { inta[]={1,2,3,3,5,6,6,3}; intalen=sizeof(a)/sizeof(int); ...
用C++的stl库,相信大家都有用vector的经历,毕竟vector支持直接下标方式取数据的确方便很多。 但是vector默认是不提供find方法的,所以我们在查找的时候,通常这样写代码: vector<int>vec; for(unsignedinti=0;i<vec.size();++i) { if(vec[i]==xxx)
the function returns last.find函数原型：template <class InputIterator, class T>InputIterator find (...
代码语言:cpp 代码运行次数:0 运行 AI代码解释 // TEMPLATE FUNCTION find template<class _InIt, class _Ty> inline _InIt _Find(_InIt _First, _InIt _Last, const _Ty &_Val) { // find first matching _Val _DEBUG_RANGE(_First, _Last); for (; _First != _Last; ++_First) if (*_First...
Elements that are found in newints:60 Elements that are found in newvector:60 例子2 #include<iostream>#include<algorithm>#include<vector>intmain(){std::vector<int> vct {50,60,70,80};std::vector<int>::iterator ti;std::cout<<"Initial vector:";for(intk=0; k<vct.size(); k++)std...
问find_if不使用const_iteratorEN一.find运算 假设有一个int型的vector对象，名为vec，我们想知道其中是否包含某个特定值。 解决这个问题最简单的方法时使用标准库提供的find运算： 1 // value we'll look for 2 int search_value = 42; 3 4 //call find to see if that value is present 5 ...