DESKTOP-EA11HIB_20200908-蒋宇飞

一、总结

1.队列

（1）以字符串形式右侧为头左侧为尾

        x.offerFirst( "1" );
        x.offerFirst( "2" );
        System.out.println( x );//[2,1]
        
        System.out.println( x.peekLast() ); //1
        System.out.println( x );//[2,1]
        
        System.out.println( x.pollLast() ); // 1
        System.out.println( x );//[2]

(2)以字符串形式左侧为头右侧为尾

        y.offerLast( "1" ); 
        y.offerLast( "2" );
        System.out.println( y );//[1,2]
        
        System.out.println( y.peekFirst() ); //1
        System.out.println( y );//[1,2]
        
        System.out.println( y.pollFirst() ); // 1
        System.out.println( y );//[2]

2.栈

(1)以字符串形式右侧为栈顶

        x.offerLast( "1" );
        x.offerLast( "2" );
        System.out.println( x );//[1,2]

        System.out.println( x.peekLast() );//2
        System.out.println( x );//[1,2]

        System.out.println( x.pollLast() );//2
        System.out.println( x );//[1]

(2)以字符串形式左侧为栈顶

        y.offerFirst( "1" );
        y.offerFirst( "2" );
        System.out.println( y );//[2,1]
        
        System.out.println( y.peekFirst() );//2
        System.out.println( y );//[2,1]
        
        System.out.println( y.pollFirst() );//2
        System.out.println( y );//[1]

二、感想

宿舍人多，作息时间不同，想早睡也睡不着，要是想睡就能睡着就好了