package com.limuzi01;

public class 反转 {
public static void main(String[] args) {
int[] arr1 = {12, 23, 34, 45, 56, 67, 78, 89, 90};
System.out.print("[ ");
for (int i = 0; i < arr1.length; i++) {
System.out.print(arr1[i] + " ");
}
System.out.println("]");
printArray(arr1);

}
public static void printArray(int[] arr1){
System.out.println("------------------------------");
for(int start=0,end=arr1.length-1;start<=end;start++,end--){
int temp=arr1[start];
arr1[start]=arr1[end];
arr1[end]=temp;
}
System.out.print("[ ");
for(int i=0;i<9;i++){
System.out.print(arr1[i]+" ");
}
System.out.println("]");
}
}