编程题收获

1、C++创建矩阵

vector<vector<int>> matrix(RR, vector<int>(CC));
           

This creates a vector of 

RR

 size 

CC

 vectors, filled with 

.

vector<vector<int>> paths(m,vector<int>(n,1));
           

初始化为1

或者

vector<vector<int> > matrix(RR);
for ( int i = 0 ; i < RR ; i++ )
   matrix[i].resize(CC);
           

This will give you a matrix of dimensions 

RR * CC

 with all elements set to 

2、

#include <bits/stdc++.h>