std c++ vector 와 sort 사용법 예제

#include <stdio.h> #include "iostream" #include <vector> #include <algorithm> using namespace std; typedef struct point{ int a; char b; } t_pos; bool cmp(t_pos &A, t_pos &B) { return A.b < B.b; } int main() { cout << "test" << endl; vector<t_pos> a; a.push_back({1,'b'}); a.push_back({2,'t' }); a.push_back({ 3, 'e' }); a.push_back({ 4, 'a' }); sort(a.begin(), a.end(), cmp); // 삭제 //a.erase(a.begin() + 0); cout << a.at(0).a << " " << a.at(0).b << endl;; cout << a.front().a << " " << a.back().b << endl;; // 순환 for (auto &x : a) { cout << x.a << " " << x.b << endl; } cout << endl; // 삭제 for (auto &iter = a.begin(); iter != a.end(); iter++) { cout << (*iter).a << endl; if ((*iter).a == 2) { a.erase(iter); break; } } cout << endl; // 순환 for (auto &x : a) { cout << x.a << " " << x.b << endl; } // 사이즈 cout << a.size() << endl; return 0; }