Write a function that takes in a 2D char array (string array) and return a 1D char array with all the elements connected together

The method is written in Java

public static String return1D(String [][] D2) {

       int k =0;

       String D1[] = new String[D2.length * D2[0].length];

       for (int row = 0; row < D2.length; row++) {

           for (int column = 0; column < D2[row].length; column++) {

               D1[k] = D2[row][column];

               k++;

           }

       }

       for(int i = 0;i<k;i++){

           System.out.print(D1[i]);

       }

       return " ";

   }

Explanation:

See attachment for complete program that includes the main method.

However, the line by line explanation of the function is as follows

This line defines the method

public static String return1D(String [][] D2) {

This line initializes the count variable k to 0

       int k =0;

This line defines the 1 dimensional array

       String D1[] = new String[D2.length * D2[0].length];

The following iterates through the row

       for (int row = 0; row < D2.length; row++) {

The following iterates through the column

           for (int column = 0; column < D2[row].length; column++) {

This line gets all rows and columns in 1 dimensional array

               D1[k] = D2[row][column];

The counter is incremented here

               k++;

           }

       }

The following iteration prints the 1 Dimensional array

       for(int i = 0;i<k;i++){

           System.out.print(D1[i]);

       }

       return " ";

   }