Volume Control Solution

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.

Input Format

• The first line contains a single integer $T$ - the number of test cases. Then the test cases follow.
• The first and only line of each test case contains two integers $X$ and $Y$ - the initial volume and final volume of the TV.

Output Format

For each test case, output the minimum number of times Chef has to press a button to change the volume from $X$ to $Y$.

Constraints

• $1 \leq T \leq 100$
• $1 \leq X, Y \leq 100$

Sample 1:

Input

Output

2
50 54
12 10

4
2

Explanation:

Test Case 1: Chef can press the volume up button $4$ times to increase the volume from $50$ to $54$.

Test Case 2: Chef can press the volume down button $2$ times to decrease the volume from $12$ to $10$

Program :

 /* 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

{

// your code goes here

int t,x,y;

Scanner sc=new Scanner(System.in);

t=sc.nextInt();

while(t-->0)

{

    int a=sc.nextInt();

    int b=sc.nextInt();

    System.out.println(Math.abs(a-b));

}

}

}