java数组反转Reverse

三种反转数组的方法：

public class ReverseArray {
    public static void main(String[] args) {
        int[] arr = {11,22,33,55,66,88};
        printArray(arr);
        reverse0(arr);
        reverse1(arr);
        reverse2(arr);

    }
    public static void reverse0(int[] arr) {
        for(int i=0; i2; i++) {
            int tem = arr[i];
            arr[i] = arr[arr.length-1-i];
            arr[arr.length-1-i] = tem;
        }
        printArray(arr);
    }
    public static void reverse1(int[] arr) {
        for(int start=0,end=arr.length-1;startint temp = arr[start];
            arr[start] = arr[end];
            arr[end] = temp;
        }
        printArray(arr);
    }
    public static void reverse2(int[] arr) {
        int[] tem = new int[arr.length]; 
        for(int i=0; i1-i];
        }
        printArray(tem);
    }
    public static void printArray(int[] arr) {
        for(int i=0; iif(arr.length==1) {
                System.out.println("["+arr[0]+"]");
            }
            else if(i==0) {
                System.out.print("["+arr[0]+",");
            }
            else if(i==arr.length-1) {
                System.out.println(arr[i]+"]");
            }
            else {
                System.out.print(arr[i]+",");
            }
        }
    }

}

运行结果：

[11,22,33,55,66,88]
[88,66,55,33,22,11]
[11,22,33,55,66,88]
[88,66,55,33,22,11]