Question

So I would like to multiply a first digit by 2. I have to randomize either 51-55 but multiply that very first digit by 2 whichever the number may come out to be. I also need to keep the string.

FOR EXMAPLE:

Code generates 51, multiply 5 * 2 to get 10 1

or if it generates 54, multiply 5 * 2 to get 10 4

the 1 and the 4 always stay the same, only the 5 is getting multiplied

I need this to be in JAVA but so far

Here is my code:

import java.util.Random;

public class Randoms {
   public static void main(String[] args) {
   Random rng = new Random();

   String x;
   int max = 55;
   int min = 51;

   int rand_int1 = rng.nextInt((max - min) + 1) + min; // 51-55
   x = Integer.toString(rand_int1);

Answer 1

import java.util.Random;

public class Randoms {
    public static void main(String[] args) {
        Random rng = new Random();

        String x;
        int max = 55;
        int min = 51;

        int rand_int1 = rng.nextInt((max - min) + 1) + min; // 51-55
        x = Integer.toString(rand_int1);

        rand_int1 = 10 * (2 * rand_int1 / 10) + (rand_int1 % 10);   // doubles the first digit
        System.out.println(rand_int1);
    }
}