Line Them Up Kattis Problem Solution In Java

//Nayeem Shahriar Joy,Applied Physics & Electronic Engineering, University of Rajshahi.
 

import java.util.ArrayList;

import java.util.HashSet;

import java.util.Scanner;

import java.util.Set; 

 

public class Joy{

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

int a=Integer.parseInt(in.nextLine());

ArrayList<String>s1=new ArrayList<String>();

for(int i=0;i<a;i++)

{

String s=in.nextLine();

s1.add(s);

}

boolean decreasing=false;

boolean increasing=false;

for(int j=0;j<s1.size()-1;j++)

{

if(s1.get(j).compareTo(s1.get(j+1))<0)

{

decreasing=true;

}

else

{

increasing=true;

}

}

if(increasing&&decreasing)

{

System.out.println("NEITHER");

}

else if(!increasing)

{

System.out.println("INCREASING");

}

else

{

System.out.println("DECREASING");

}

}

}