Double any element's value that is less than controlValue. Ex: If controlValue = 10, then dataPoints = {2, 12, 9, 20} becomes {4, 12, 18, 20}.

import java. util. Scanner; public class StudentScores { public static void main (String [] args) { Scanner scnr = new Scanner(System. in); final int NUM_POINTS = 4; int[] dataPoints = new int[NUM_POINTS]; int controlValue; int i; controlValue = scnr. nextInt(); for (i = 0; i < dataPoints. length; ++i) { dataPoints[i] = scnr. nextInt(); } for (i = 0; i < dataPoints. length; ++i) { System. out. print(dataPoints[i] + " "); } System. out. println(); } }

import java.util.Scanner;

public class StudentScores

{

public static void main(String[] args) {

 Scanner scnr = new Scanner(System.in);

 final int NUM_POINTS = 4;

 int[] dataPoints = new int[NUM_POINTS];

 int controlValue;

 int i;

 controlValue = scnr.nextInt();

 for (i = 0; i < dataPoints.length; ++i) {

     dataPoints[i] = scnr.nextInt();

 }

 for (i = 0; i < dataPoints.length; ++i) {

     System.out.print(dataPoints[i] + " ");

 }

 System.out.println();

 for (i = 0; i < dataPoints.length; ++i) {

     if(dataPoints[i] < controlValue){

         dataPoints[i] = dataPoints[i] * 2;          

     }

     System.out.print(dataPoints[i] + " ");

 }

}

}

Explanation:

*Added parts highligted.

After getting the control value and values for the array, you printed them.

Create a for loop that iterates through the dataPoints. Inside the loop, check if a value in dataPoints is smaller than the contorolValue. If it is, multiply that value with 2 and assign it to the dataPoints array. Print the elements of the dataPoints

import java.util.Scanner;

public class numm3 {

   public static void main (String [] args) {

       Scanner scnr = new Scanner(System.in);

       final int NUM_POINTS = 4;

       int[] dataPoints = new int[NUM_POINTS];

       int controlValue;

       int i;

       System.out.println("Enter the control Variable");

       controlValue = scnr.nextInt();

       System.out.println("enter elements for the array");

       for (i = 0; i < dataPoints.length; ++i) {

           dataPoints[i] = scnr.nextInt();

       }

       for (i = 0; i < dataPoints.length; ++i) {

           System.out.print(dataPoints[i] + " ");

       }

       System.out.println();

       //Doubling elements Less than Control Variable

       for (i = 0; i < dataPoints.length; ++i) {

           if (dataPoints[i]<controlValue){

               dataPoints[i] = dataPoints[i]*2;

           }

           System.out.print(dataPoints[i] + " ");

       }

       System.out.println(); } }

Explanation:

See the additional code to accomplish the task in bold

The trick is using an if statement inside of a for loop that checks the condition (dataPoints[i]<controlValue) If true, it multiplies the element by 2

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