题解 | #数组元素反转#

#include 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] << ", ";
}

 **倒序： **                    
for(int i = 0,j = len-1; i <= j ; i++,j--){
    int tem = arr[i];
    arr[i] = arr[j];
    arr[j] = tem;
}


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

return 0;

}