Volume Control

Volume Control

Problem
Chef is watching TV. The current volume of the TV is X.
Pressing the volume up button of the TV remote increases the volume by 1 while pressing the volume down button decreases the volume by 1. Chef wants to change the volume from X to Y.
Find the minimum number of button presses required to do so.

/* package codechef; // don't place package name! */

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

/* Name of the class has to be "Main" only if the class is public. */
class Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner sc=new Scanner(System.in);
		int t=sc.nextInt();
		for(int i=0;i<t;i++){
		    int x=sc.nextInt();
		    int y=sc.nextInt();
		    System.out.println(Math.abs(x-y));
		}// your code goes here
	}
}