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Irina18 [472]
2 years ago
7

JAVA

Computers and Technology
1 answer:
avanturin [10]2 years ago
3 0

Answer:

   public ArrayList onlyBlue(String[] clothes){

       ArrayList<String> blueCloths = new ArrayList<>();

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

           if(clothes[i].equalsIgnoreCase("blue")){

               blueCloths.add(clothes[i]);

           }

       }

       return blueCloths;

   }

Explanation:

  • Create the method to accept an Array object of type String representing colors with a return type of an ArrayList
  • Within the method body, create and initialize an Arraylist
  • Use a for loop to iterate the Array of cloths.
  • Use an if statement within the for loop to check if item equals blue and add to the Arraylist.
  • Finally return the arrayList to the caller
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Write a method that will receive 2 numbers as parameters and will return a string containing the pattern based on those two numb
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Answer:

The purpose of the Java compiler is to translate source code into instructions  public static void main(String[] args)  Arity is the number of arguments passed to a constructor or method or the number ... and objects, which are the focus of object-based programs.  Remove the 2 from between the square brackets to make.

Explanation:

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2 years ago
9.6 Code Practice: Question 1
worty [1.4K]

Answer:

  1. import java.util.Random;
  2. import java.util.Arrays;
  3. public class Main {
  4.    public static void main(String[] args) {
  5.        int n = 10;
  6.        int [] myArray = new int[n];
  7.        buildArray(myArray, n);
  8.        System.out.println(Arrays.toString(myArray));
  9.    }
  10.    public static void buildArray(int[] arr, int n){
  11.        for(int i=0; i < arr.length; i++){
  12.            Random rand = new Random();
  13.            arr[i] = rand.nextInt(90) +10;
  14.        }
  15.    }
  16. }

Explanation:

Firstly, create a method buildArray that take two inputs, an array and an array size (Line 12). In the method, use random nextInt method to repeatedly generate a two digit random number within a for loop that will loop over array size number of times (Line 13-15). The expression rand.nextInt(90) + 10 will generate digits between 10 - 99.

In the main program, call the build array method by using an array and array size as input arguments (Line 8). At last, print the array after calling the buildArray method (Line 9).

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DerKrebs [107]

Answer:

There could be a collision if a hidden node problem occurs.

Explanation:

CSMA/CA(carrier sense multiple access/ collision avoidance) is a multiple access method in wireless networking, that allows multiple node to transmit. Collision avoidance of this method is based on preventing signal loss or downtime as a result of collision of transmitting multi signals.

If a node at step 4(transmit frame) sends the first frame, the node still needs to send a RTS(request to send) and to receive a Clear to send (CTS) from the WAP, the is to mitigate the issue of hidden node problem as all frame are treated as unit, so other listening nodes, not detected would seek to connect and transmit as well.

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