Java!- Activity 1. Printing Arrays. In this activity, you will have to implement

Question

Java!- Activity 1. Printing Arrays. In this activity, you will have to implement three printing methods.

Method 1: printArray

Parameter: a 1D array of Strings

Return type: void

This method prints the content of a 1D array of strings, one string per line.

Requirement: You are expected to use a for loop to implement this method.

Method2: printArray

Parameter: a 1D array of integers

Return type: void

This method prints the content of a 1D array of integers, with one space between each number and returning to the next line once done printing all numbers.

Requirement: You are expected to use a for loop to implement this method.

Method3: printArray

Parameter: a 2D array of integers

Return type: void

This method prints the content of a 2D array of integers, one line per row of the 2D array.

Requirement: You are expected to call the method printArray on 1D arrays of integers to implement this method.

Given:

public static void printArray(int[] myArray) {
        // your code goes here
    }
    public static void printArray(int[][] myArray) {
        // your code goes here
    }
    public static void printArray(String[] myArray) {
        // your code goes here
    }

Method 1: printArray

Parameter: a 1D array of Strings

Return type: void

Explanation / Answer

Program:

=====================================================================

public class PrintArrays {
   public static void main(String args[])
   {
       int oneDArrayInt[] = { 1, 2, 3, 8, 6, 4, 5, 11, 12, 16, 90, 31 };
       int[][] twoDArray = {{3,4,5,6,9},{8,5,9,6,3},{1,1,1,1,6}};
      
       String oneDArrayString[] = { "Hello","Good","Morning","Guys"};
       System.out.println("Printing 1 D array int.");
       System.out.println("=======================");
       printArray(oneDArrayInt);
       System.out.println("Printing 2 D array using 1 D array.");
       System.out.println("===================================");
       printArray(twoDArray);
       System.out.println("Printing 1 D array String.");
       System.out.println("==========================");
       printArray(oneDArrayString);
   }

   public static void printArray(int[] myArray) {
       int len= myArray.length;
       for(int i=0;i<len;i++)
       {
           System.out.print(myArray[i]+" ");
       }
       System.out.println();
    }
    public static void printArray(int[][] myArray) {
       int row= myArray.length;
       int col= myArray[0].length;
             
       for(int i=0;i<row;i++)
       {
           int oneDArrayIntNew[]=new int[col];
           for(int j=0;j<col;j++)
           {
           //You are expected to call the method printArray on 1D arrays of integers to implement this method.
               oneDArrayIntNew[j]=myArray[i][j];
           }
           printArray(oneDArrayIntNew);
          
       }
      
    }
    public static void printArray(String[] myArray) {
       int len= myArray.length;
       for(int i=0;i<len;i++)
       {
           System.out.print(myArray[i]+" ");
       }
       System.out.println();
    }
}

===================================================================

Output:

--------

Printing 1 D array int.
=======================
1 2 3 8 6 4 5 11 12 16 90 31
Printing 2 D array using 1 D array.
===================================
3 4 5 6 9
8 5 9 6 3
1 1 1 1 6
Printing 1 D array String.
==========================
Hello Good Morning Guys

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