题解 | #HTTP状态码#

import java.util.Scanner; public class Main{ public static void main(String[] args){ Scanner scan = new Scanner(System.in); int n = scan.nextInt(); int[] arr = new int[n]; for(int i = 0;i < arr.length;i++){ arr[i] = scan.nextInt(); } boolean isFlag = false; for(int i = 0;i < arr.length - 2;i++){ if((arr[i] > arr[i+1])&&(arr[i+1] < arr[i+2])||(arr[i] < arr[i+1])&&(arr[i+1] > arr[i+2])){ System.out.println("unsorted"); isFlag = true; break;

        }
    }
    if(!isFlag){
        System.out.println("sorted");
        
    }
    
}

}