编程题收获

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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 0.

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 0

2、

#include <bits/stdc++.h>