[zz]c++ list sort方法

1: #include <list> 2: #include <string> 3: #include <functional> 4: #include <iostream> 5: 6: struct S { 7: std::string firstname; 8: std::string secondname; 9: int ID; 10: // 重新定义小于，因为默认的sort函数调用的操作符是<，所以我们只需要重载 < 就好了 11: bool operator < (S & b) { 12: return ID < b.ID; 13: } 14:   15: }; 16: int main(int argc, char* argv[]) 17: { 18: std::list<S> mylist; 19: std::list<S>::iterator iter; 20: S a; 21: a.firstname ="dfadf"; 22: a.ID = 5; 23: mylist.push_back (a); 24: a.firstname ="得到"; 25: a.ID = 9; 26: mylist.push_back (a); 27: a.firstname ="xxx"; 28: a.ID = 7; 29: mylist.push_back (a); 30: a.firstname ="gggg"; 31: a.ID = 25; 32: mylist.push_back (a); 33: mylist.sort(); 34: // 现在默认的operator已经被我们重载了，就不用管，直接调用sort就好了 35: for (iter = mylist.begin(); iter != mylist.end();++iter) 36: { 37: std::cout <<static_cast<S>(*iter).ID << "\t"; 38: } 39: std::cout <<std::endl; 40: return 0; 41: }

转载于:https://www.cnblogs.com/zhangzhang/archive/2013/01/25/2877380.html

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