As per as a2D vectoris concerned it's avector of a 1D vector. But what we do in sorting a 1D vector like, sort(vector.begin(),vector.end()); We can't do the same for a 2D vector without any user-defined comparator function, as it will merely sort based on the first element ...
#include<iostream>#include<vector>usingnamespacestd;intmain(void){inta[]={3,1,2,3,4};vector<int>v(a,a+5);//for (vector<int>::iterator it=v.begin(); it!=v.end(); ++it)//{// if (*it == 3)// v.erase(it); ERROR!// else// cout<<*it<<' ';//}for(vector<int>::...
voidprint(conststd::vector<Student>&v) { std::cout<<"Name\tSec\tGroup"<<std::endl; for(unsignedinti=0;i<v.size();i++) { std::cout<<v[i].name<<"\t"<<v[i].sec<<"\t" <<v[i].group<<std::endl; } } intmain() ...
Grailsort in-placeyesnn㏒nn㏒n1grailsort.hppgrail_sort_in_place Wikisortyesnn㏒nn㏒n1wikisort.hppwiki_sort Timsort: Tim Peter'soriginal implementation Usage Here is the demo, or you can trydemo.cpp #include"sortlib.hpp"#include<cstdlib>intmain(void) { std::vector<int>arr(100);for(size...
返回值为true,vector等容器按照调用顺序进行排列,否则反序。 这里面比较难理解的是利用myobject和myfunction进行建立排序规则。理解是:myobject、myfunction中的i,j都是待排序的对象,其形参则是 sort(x.begin(), x.end(),...); 中"x"的一个元素。 即...
希望以A::cmp作为比较器对vector<int> a排序。 编译错误:(关键的一段) error:must use'.*'or'->*'to call pointer-to-member function in '((__gnu_cxx::__ops::_Iter_comp_iter<bool(A::*)(int,int)>*)this)->__gnu_cxx::__ops::_Iter_comp_iter<bool(A::*)(int,int)>::_M_comp...
代码语言:javascript 代码运行次数:0 AI代码解释 #include<iostream>#include<algorithm>#include<vector>using namespace std;intmain(){vector<int>a{1,4,2,5,3,6,7,8,9};sort(a.begin(),a.end());for(int i=0;i<a.size();i++){cout<<a[i]<<' ';}//1 2 3 4 5 6 7 8 9} ...
<< endl; for (size_t i = 0; i != SIZE; ++i) cout << intArray[i] << " "; return 0; } Edit & run on cpp.sh Things to know When we use the sort function to sort an array our arguments will look a bit different then when we use it on a vector for example. In the...
::cout #include <algorithm> // std::sort #include <vector> // std::vector using namespace std; bool myfunction (int i,int j) { return (i>j); } int main () { vector<int> myvector = {32,71,12,45,26,80,53,33}; // using function as comp sort (myvector....
#include <vector> #include <algorithm> int main() { std::vector<int> v1(17, 0); std::sort(v1.begin(), v1.end(), [](int a, int b ) { return true; // return &a >= &b 等效 }); } 回看cppreference 上关于 comp 要满足条件的表格, 这也是违反了 If comp(a, b) == tr...