题解 | 创建二维动态数组

#include<bits/stdc++.h>
#include<vector>
//容器的二位数组行列，，
using namespace std;
int main(){
    int n;
    cin>>n;
    // write your code here......
    vector<vector<int>> arr(n,vector<int>(n));
    for(int i = 0; i < arr.size(); i++)
    {
        for(int j = 0; j < arr[i].size();j++)
        {
            arr[i][j] = i + j;
            cout << arr[i][j] << ' ';
        }
        cout << '\n';
    }

    return 0;
}