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Assume that an array of ints named a has been declared with 12 elements. The integer variable k holds a value between 0 and 6.
Assign 15 to the array element whose index is k.

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teobguan2019

Answer:

The codes (written in Java) that implement the logic as described in the question are presented below:

  1. import java.util.Random;
  3. public class Main {
  5.    public static void main(String[] args) {
  7.        int a[] = new int[12];
  9.        Random rand = new Random();
  10.        int k = rand.nextInt(7);
  12.        a[k] = 15;
  14.    }
  15. }

Explanation:

An integer array with a specific size 12 is declared and named as a (Line 7).

Since the variable k is expected to hold a value between 0 and 6, one way to achieve the aim is to randomly generate an integer between 0  to 6 and then assign it to the variable k. We can create a random integer within a specific range using Java Random Generator. The steps are as follows:

  1. import Java Random class (Line 1)
  2. create a Random object (Line 9)
  3. use nextInt() method of the Random object to generate a random integer. To ensure the generated integer is within the range 0 - 6, just simply pass 7 as the argument of the nextInt() method. nextInt(7) will generate an integer in the range of 0 <= x < 7  
  4. Assign generated random number to variable k (Line 10)
  5. Assign 15 to a[k]   (Line 12)

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