网易笔试在线编程_ 操作序列

方法一：

import java.util.Deque;import java.util.LinkedList;import java.util.Scanner;public class Main {public static void main(String[] args) {int n;int str[] = null;Scanner scanner=new Scanner(System.in);n=scanner.nextInt();str=new int[n];for(int i=0;i<n;i++){str[i]=scanner.nextInt();}Deque<Integer> subway=new LinkedList<Integer>();if(n%2!=0){for(int i=0;i<n;i++){if(i%2==0)subway.offerFirst(str[i]);elsesubway.offerLast(str[i]);}}else{for(int i=0;i<n;i++){if(i%2==0)subway.offerLast(str[i]);elsesubway.offerFirst(str[i]);}}for(int i=0;i<n;i++){            if(i!=n-1){                System.out.print(subway.pollFirst()+" ");            }else{                System.out.print(subway.pollFirst());            }}}}

方法二：