但它和upper_bound()函数的最大不同在于找到的是第一个可插入的位置,而upper_bound找到的是最后一个可插入的位置。对于它的例子如下: int main() { vector<int> nums = {1, 2, 3, 4, 4, 5}; cout << *lower_bound(nums.begin(), nums.end(), 3) << endl; // >: 3 cout << lower_boun...
The return type is an iterator to the lower bound found in the range. Example: C++ Implementation #include <bits/stdc++.h>usingnamespacestd;intmain() { vector<int>arr{6,5,9,12,4};//sort before using lower_bound()sort(arr.begin(), arr.end());intsearching_element=6; vector<int>:...
#include<bits/stdc++.h>usingnamespacestd;intmain(){vector<int> arr{6,5,9,12,4};//sort before usinglower_bound()sort(arr.begin(), arr.end());intsearching_element =6;vector<int>::iterator it; it =lower_bound(arr.begin(), arr.end(), searching_element);//if all eleemnts are s...
C++ STL set::lower_bound() function: Here, we are going to learn about the lower_bound() function of set in C++ STL (Standard Template Library).
当我们需要指定一组比较器来对pair对象进行排序或查找操作时,可以使用STL提供的std::pair_compare结构体。该结构体可以被视为一个函数对象,支持status_free、function指针等过载函数,可以被传递给STL容器算法中的比较器参数。 下面是一个声明比较器的例子,针对以pair<int, string>为元素的vector进行按照第一个元素降序...
}intmain(void){vector<char> v = {'A','b','C','d','E'};autoit =lower_bound(v.begin(), v.end(),'C');cout<<"First element which is greater than \'C\' is "<< *it <<endl; it =lower_bound(v.begin(), v.end(),'C', ignore_case);cout<<"First element which is great...
std::sort 对vector成员进行排序; std::sort(v.begin(),v.end(),compare); std::lower_bound 在排序的vector中进行二分查找,查找第一大于等于; std::lower_bound(v.begin(),v.end(),v.element_type_obj,compare); std::upper_bound 在排序的vector中进行二分查找,查找第一个大于; ...
#include <algorithm>#include <cassert>#include <complex>#include <iostream>#include <vector>structPriceInfo{doubleprice;};intmain(){conststd::vector<int>data{1,2,4,5,5,6};for(inti=0;i<8;++i){// Search for first element x such that i ≤ xautolower=std::lower_bound(data.begin()...
<vector> using namespace std; int main() { const int VECTOR_SIZE = 8 ; // Define a template class vector of int typedef vector<int > IntVector ; //Define an iterator for template class vector of strings typedef IntVector::iterator IntVectorIt ; IntVector Numbers(VECTOR_SIZE) ; Int...
vector<int> v(a, a +6); for_each(v.begin(), v.end(), print_element); cout << endl; rotate(v.begin(), v.begin() +2, v.end()); for_each(v.begin(), v.end(), print_element); cout << endl; sort(v.begin(), v.end()); ...