题解 | #数组元素反转#

#include <iostream>
using namespace std;

int main() {

    int arr[6] = { 0 };

    int len = sizeof(arr) / sizeof(int);
    
    for (int i = 0; i < len; i++) {
        cin >> arr[i];
    }

    cout << "[";
    for (int i = 0; i < len; i++) {
        if (i == len - 1) {
            cout << arr[i] << "]" << endl;
            break;
        }
        cout << arr[i] << ", ";
    }

    // write your code here......
    
    int left = 0;
    int right = len - 1;

    while(left <= right)
    {
        swap(arr[left],arr[right]);
        ++left;
        --right;
    }

    cout << "[";
    for (int i = 0; i < len; i++) {
        if (i == len - 1) 
        {
            cout << arr[i] << "]" << endl;
            break;
        }
        cout << arr[i] << ", ";
    }


    return 0;
}