Question

I’ve been given Pseudo code to translate into a Java program.

It is as follows:

• Set a Boolean variable “first” to true.

• While another value has been read successfully

  • If first is true
    • Set the minimum to the value just read
    • Set first to false
  • Else if the value is less than the minimum
    • Set the minimum to the value
  • Print the minimum

So far I have this:

import java.util.Scanner;
public class InputLoop
{
    public static void main(String[] args)
    {
    Scanner scan = new Scanner(System.in);
    System.out.println("Enter an integer");

    boolean first = true;
    int min = 0;
    int val = 0;

    while (scan.hasNextInt())
    {
        val = scan.nextInt();
        System.out.println("Enter an integer");
        if (first == true) 
        {
            min = val;
            first = false;
        } 

        else if (val < min) 
        {
            System.out.println("Enter an integer");
            min = val;

        }

        while (!scan.hasNextInt())
        {
            System.out.println (("The minimum value is") + (min));
            break;
        }
    }
}
}

Any help would be greatly appreciated as I’m stumped!

Thanks.

Answer 1

You’re doing great–just keep doing what you’re doing. But here’s some stuff you’ll need to know to finish:

• The Scanner class documentation is here. There, you’ll see that you can call scan.nextInt(), and it’ll return you the integer that scan.hasNextInt() has promised.
• You can declare integer values just you’re doing for the “first” flag, which when true is denoting that it’s the first input is being processed.
• If multiple statements are to be executed “inside” an if clause, you need {}’s, and you can use the else keyword to only execute the next statement if the prior if conditions weren’t true.

Let us know if something doesn’t make sense.