ring__的博客

#include <iostream> #include <vector> #include<algorithm> using namespace std; int main() { vector<vector<int>> vec = { {2,3}, {1,8}, {5,4}, {6,4}, {5,2}, {6,7}, {5,5} }; sort(vec.begin(), vec.end(), [](c.

c++遍历map # include <iostream> # include <unordered_map> # using namespace std; int main() { unordered_map<char, int> ma = { {'a',1}, {'b',2}, {'c',3}}; // 法一。c++11 for (auto &p : ma)

c++ 结构体重载== struct bbox { float x, y, w, h; //重载==运算符，相等返回1，不等返回0 bool operator==(const bbox &p) { return (x==p.x && y==p.y && w==p.w && h==p.h); } }; int main(int argc, char const *argv[]) { bbox a