java数组顺序颠倒

for(int i = 0;i < arr.length /2;i++){
    string temp = arr[i];
    arr[i] = arr[arr.length - i - 1];
    arr[arr.length - i -1] = temp;
}




for(int i = 0,j = arr.length - 1;i < j;i++,j--){
    string temp = arr[i];
    arr[i] = arr[j];
    arr[j] = temp;
}

public class ArrayReverse {
    public static void reverse(int[] arr) {
        int start = 0;
        int end = arr.length - 1;

        while (start < end) {
            int temp = arr[start];
            arr[start] = arr[end];
            arr[end] = temp;

            start++;
            end--;
        }
    }

    public static void main(String[] args) {
        int[] arr = {1, 2, 3, 4, 5};
        System.out.println("原始数组: " + Arrays.toString(arr));

        reverse(arr);
        System.out.println("颠倒后的数组: " + Arrays.toString(arr));
    }
}