京东笔试教室怎么搞啊？（附第一题JAVA）

public class GouDong {

    public static void main(String[] args){
        System.out.println(Integer.MAX_VALUE);
        new GouDong().exam1();
    }

    public void exam1(){
        Scanner in = new Scanner(System.in);
        while(in.hasNext()){
            int n = in.nextInt();
            int[] high = new int[n];
            for(int i=0;i<n;i++){
                high[i]=in.nextInt();
            }
            Stack<Integer> max = new Stack<Integer>();
            Stack<Integer> min = new Stack<Integer>();
            max.push(high[0]);
            min.push(high[0]);
            for(int i=1;i<n;i++){
                if(high[i]>=max.peek()){
                    max.push(high[i]);
                    min.push(high[i]);
                    continue;
                }
                if(high[i]>=min.peek())
                    continue;
                int maxtmp=max.pop();
                int mintmp=min.pop();
                while(!max.empty()&&high[i]<max.peek()){
                    max.pop();
                    mintmp=min.pop();
                }
                if(mintmp>high[i])
                    mintmp=high[i];
                max.push(maxtmp);
                min.push(mintmp);
            }
            System.out.println(max.size());
        }
    }
}