翻转数组的两种方法

#include <iostream>
#include <vector>
using namespace std;
int main(void)
{
    // 双指针翻转数组
    vector<int> arr = {1, 2, 3, 4, 5, 6};
    int start = 0;
    int end = arr.size() - 1;
    while (start < end)
    {
        int temp = arr[start];
        arr[start] = arr[end];
        arr[end] = temp;
        start++;
        end--;
    }
    for (auto i : arr)
    {
        cout << i << " ";
    }
    cout << endl;
    cout << "------------------" << endl;
    // 倒序交换翻转数组
    vector<int> arr1 = {1, 2, 3, 4, 5, 6};
    for (int i = 0; i < arr1.size() / 2; i++)
    {
        int temp = arr1[i];
        arr1[i] = arr1[arr1.size() - 1 - i];
        arr1[arr1.size() - i - 1] = temp;
    }
    for (auto i : arr1)
    {
        cout << i << " ";
    }
}

public class App {
    // 数组逆序存放
    public static void main(String[] args) {
        int[] arr = new int[5];
        for (int i = 0; i < arr.length; i++) {
            arr[i] = i;
        }
        //翻转方法
        for (int i = 0; i < arr.length / 2; i++) {
            int temp = arr[i];
            arr[i] = arr[arr.length - i - 1];
            arr[arr.length - i - 1] = temp;
        }
        for (int i : arr) {
            System.out.println(i);
        }


        //--------------------------------------------------------------
        System.out.println("------------------------------------------------------------");
        int[] arr1 = new int[5];
        for(int i = 0; i < arr1.length; i++){
            arr1[i] = i;
        }
        int start = 0;
        int end = arr1.length - 1;
        while(start < end) {
            int temp = arr1[start];
            arr1[start] = arr1[end];
            arr1[end] = temp;
            start++;
            end--;
         }
         for(int i : arr1) {
            System.out.println(i);
          }
    }
}