Question

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

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);

   // from here whatever the number may be either 51-55, I ONLY want to double the first digit by 2.

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 += (rand_int1 % 10);  // this add the last digit to rand_int1
        // for example if number is 54, then it adds 4. so, number will be 58. first digit is multiplied by 2.
        System.out.println(rand_int1);
    }
}