java数组递减

最多递减到最后一位

import java.util.Scanner;
public class Test{public static void main(String[] args){int arr1[] = {1,2,3,4,5};Scanner sc = new Scanner(System.in);String str = "";while(arr1.length>1){System.out.println("请输入缩减指令y/n");str = sc.next();if(str.equals("n"))break;int arr2[] = new int[arr1.length - 1];for(int i=0;i<arr2.length;i++){arr2[i] = arr1[i];}arr1 = arr2;}System.out.print("缩减结果：");for(int j=0;j<arr1.length;j++){System.out.print(arr1[j]);}}
}