import java.util.*;
import java.lang.*;
import java.io.*;

// The main method must be in a class named "Main".
class Main {
    public static void main(String[] args) {
        System.out.println("Hello world!");
       int [] arr = {2,3,4,5,5};
       System.out.println("arr length="+arr.length);
  for(int i=arr.length-1; i>0;--i) 
 { 
     System.out.println(arr[i]);
 }
  
  
  // maximum, minimum in array 
  int[] arr2 = {2,4,6,7,67,89};
  int max =0;
  
  
  for (int elmnt :arr2)
 { if (elmnt>max)
  max = elmnt;
 }
   System.out.println(max);
   
   
 /// array sorted or not mean ascending order 
   System.out.println("array check sorted or not ");
   int [] arr3 = {3,4,5,44,55,66};
  
   boolean tryy = true;
   
   for (int i=0; i<arr3.length-1;i++)
 
  { 
      if (arr3[i]>arr3[i+1])
    { // System.out.println("array  is not sorted");
      //System.exit(0);
       tryy = false;
        break;        
        
    } 
      
 
  }    if (tryy ==false )
  
       System.out.println("array is not sorted");
       
         else     // if (tryy ==true )   we can also write this
        System.out.println("array is sorted");
   
   
   
   
    }
}