CODEWITHSUNDEEP
javaarrays
Anthony Gayflor
Anthony Gayflor

Reputation: 25

How can i print a list of arrays in JAVA?

i'm trying to write a program in java to print a list of arrays. I know there's already Array.toString(arr) method, but i don't want the "[..]" on the list. I wrote some simple code to do so.

public static void main(String[] args){
    Scanner in = new Scanner(System.in);
    int t = in.nextInt();
    int[] v = new int[10000];
    for(int i = 0; i <= t; i++){
            int m = in.nextInt();
            int n = in.nextInt();
            int list = 0;
            for(int min = m; min < n; min++){
                    if(isPrime(min) == true){
                        v[list] = min;
                        list++;
                    }
                }
            System.out.printf(("%d \n"), list + ("\n \n"));
            }
        }

public static boolean isPrime(int num){
    int sqrt = (int) Math.sqrt(num) + 1;
    for(int i = 2; i < sqrt; i++){
        if(num % i == 0)
            return false;
    }
    return true;
}

Say that this is the Input 1 1 10

and the Output is 2 3 5 7

in this exact order and formatting. What am i doing wrong?

Upvotes: 1

Views: 118

Answers (1)

Anoop LL
Anoop LL

Reputation: 1575

this will solve your error

System.out.printf(("%d \n"), list,( "\n \n"));

But if you want to print prime numbers then you need to print num instead of list

for(int min = m; min < n; min++){
                if(isPrime(min) == true){
                    v[list] = min;
                    list++;
                  System.out.printf(("%d \n"), min,( "\n \n"));
                }
            }

        }

Upvotes: 2

Related Questions