一、一维数组
1.动态数组来实现
#include<iostream>
#include<vector>
using namespace std;
int main() {
//输入行数
int n;
cin >> n;
//一维动态数组的申请
int *a = new int[n];
//输入数组的每个元素
for (int i = 0; i < n; i++) {
cin >> a[i];
}
for (int i = 0; i < n; i++) {
cout << a[i]<< " ";
}
//申请的记得释放
delete[]a;
system("pause");
return 0;
}
2.vector来实现
#include<iostream>
#include<vector>
using namespace std;
int main() {
//输入行数
int n;
cin >> n;
vector<int> a(n);
//输入数组的每个元素
for (int i = 0; i < n; i++) {
cin >> a[i];
}
for (int i = 0; i < n; i++) {
cout << a[i]<< " ";
}
system("pause");
return 0;
}
二、二维数组
1.动态数组来实现
#include<iostream>
#include<vector>
using namespace std;
int main() {
//输入二维数组的行数和列数
int n, m;
cin >> n >> m;
//定义一个n行m列的二维数组
int **a = new int*[n];
for (int i = 0; i < n; i++) {
a[i] = new int[m];
}
//输入每个元素
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
cin >> a[i][j];
}
}
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
cout << a[i][j] << " ";
}
cout << endl;
}
//二维数组的释放
for (int i = 0; i < n; i++)
delete[]a[i];
delete[]a;
system("pause");
return 0;
}
2.vector来实现
#include<iostream>
#include<vector>
using namespace std;
int main(){
//输入二维数组的行数和列数
int n, m;
cin >> n >> m;
//定义一个n行m列的二维数组
vector<vector<int>> a(n, vector<int>(m));
//输入每个元素
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
cin >> a[i][j];
}
}
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
cout << a[i][j] << " ";
}
cout << endl;
}
system("pause");
return 0;
}