CODEWITHSUNDEEP
java
Zach Beck
Zach Beck

Reputation: 51

I need a loop to ask user 5 times for a number between 1 and 10

In this function, I need a loop that asks the user for 5 numbers between 1 and 10 and stores the numbers in an array call numArray. I need validation on the user's input. I know I need another loop somewhere that will allow the user to enter 5 different numbers, but I don't know where to put it.

public class numberInput {
static int number;

static Scanner keyboard = new Scanner(System.in);

public static void main(String[] args) throws IOException {

    // Calls inputNumbers function
    inputNumbers();

}

// inputNumbers function
public static void inputNumbers() {

    System.out.println("Please enter 5 numbers between 1 and 10.");
    number = keyboard.nextInt();

    // If below is true display error message
    while (number <= 0 || number > 10) {

        System.out.println("Error: Enter a number BETWEEN 1 and 10.");
        number = keyboard.nextInt();

    }

}
}

Upvotes: 0

Views: 900

Answers (1)

lier wu
lier wu

Reputation: 620

Just like this, ask for 5 distinct numbers:

public static void inputNumbers() {
        ArrayList<Integer> al = new ArrayList<Integer>();
        System.out.println("Please enter 5 distinct numbers between 1 and 10.");
            for(int i = 0;i<5;i++) {
                number = keyboard.nextInt();

                // If below is true display error message
                while (number <= 0 || number > 10 || al.contains(number)) {//al.contain(number) means does al have number in it

                    System.out.println("Error: Enter a number BETWEEN 1 and 10.");
                    number = keyboard.nextInt();

                }
                al.add(number);//now add the number into the arraylist
            }
}

If you want an array, do:

int[] numArray = new int[];
numArray = al.toArray(new int[0]);

Upvotes: 1

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