Volume Control CodeChef Solution

Problem – Volume Control CodeChef Solution

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.


  • 1≤T≤100
  • 1≤X,Y≤100

Sample 1:

Input: 2
50 54
12 10
Output: 4


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.

Volume Control CodeChef Solution in C++14

#include <iostream>
using namespace std;

int main() {
    int i ;
    cin >> i;
        int a ,b;
        cin >> a >>b;
        int min = a - b;
        if(min < 0){
            min = min*(-1);
        cout << min << endl;
	return 0;

Volume Control CodeChef Solution in Java

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

class Codechef
	public static void main (String[] args) throws java.lang.Exception
		Scanner sc=new Scanner(System.in);
		int n=sc.nextInt();
		for(int i=1;i<=n;i++)
		    int X=sc.nextInt();
		    int Y=sc.nextInt();
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