每次程式設計題輸入輸入測試vector時，都要重寫測試函式，實在是太麻煩了，整理記錄一個吧。

一、一維vector初始化、列印

#include <vector>
#include <iostream>
using namespace std;


void printVector(vector<int > vec)
{
    for (vector<int>::iterator iter = vec.begin(); iter !=vec.end();++iter)
    {
        cout << *iter << " "
 
;
    }
    cout<<endl;
}

int  main()
{
    int arr[] = { 1, 2, 3, 4,5 };
    vector<int> vectorOne(arr,arr+5);
    printVector(vectorOne);

    return 0;
}

二、二維vector輸入、初始化、列印

#include <iostream>
#include <vector>

using namespace std;


void print2Vec(vector<vector<int
 
> > array)
{
    int rows = array.size();//行數
    int columns = array[0].size();//列數
    for (int i = 0; i< array.size(); ++i)
    {
for (vector<int>::iterator it = array[i].begin(); it != array[i].end(); it++)
            cout << *it << " ";
        cout << endl;
    }
}

//初始化
 

vector<vector<int> > array(4, vector<int>(4,0)); //初始化二維陣列行列
int main()
{
    vector<vector<int> > test;
    vector<int> v;
    int n,temp;

    //n階數矩陣 
    cin >> n;
    //輸入
    for (int i = 0; i<n; i++) {
        v.clear(); //每次記得clear:)
        for (int j = 0; j < n; j++)
        {
            cin >> temp;
            v.push_back(temp);
        }
        test.push_back(v);
    }

    //輸出
    print2Vec(test);
    return 0;
}