Bake Time Countdown

Bake Time Countdown

This exercise focuses on using a fixed constant in your calculation and reading a single integer input to solve a simple, practical problem.

Problem Statement:

According to a recipe, a lasagna requires 40 minutes of total baking time. Given the actual time (in minutes), N, that the lasagna has already been in the oven, calculate and output how many more minutes are required.

Constraint Note:

The total baking time (40 minutes) is the maximum constraint for the input N (where 0 ≤ N ≤ 40)

Example:

Java Solution and Breakdown

The solution uses the Scanner class to read the input time (N) and a simple subtraction operation to find the difference between the total time (40) and the elapsed time (N).

1. Complete Java Code

import java.util.Scanner;

public class BakeTimeCountdown {
    // Define the total time as a constant for clarity
    public static final int TOTAL_BAKE_TIME = 40; 
    
    public static void main(String[] args) {
        // 1. Initialize the Scanner object for input.
        Scanner sc = new Scanner(System.in);

        // 2. Read the elapsed time, N.
        int elapsedMinutes = sc.nextInt();
        
        sc.close();

        // 3. Calculate the remaining time: Total Time - Elapsed Time.
        int remainingTime = TOTAL_BAKE_TIME - elapsedMinutes;

        // 4. Print the result.
        System.out.println(remainingTime);
    }
}

2. Explanation of Key Concepts