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Java Array Exercises: Copy an array by iterating the array

Java Array: Exercise-8 with Solution

Write a Java program to copy an array by iterating the array.

Pictorial Presentation:

Java Array Exercises: Copy an array by iterating the array

Sample Solution:

Java Code:

import java.util.Arrays; 
public class Exercise8 {
 public static void main(String[] args) {
   int[] my_array = {25, 14, 56, 15, 36, 56, 77, 18, 29, 49};
   int[] new_array = new int[10];     
 
   System.out.println("Source Array : "+Arrays.toString(my_array));     
   
   for(int i=0; i < my_array.length; i++) {
    new_array[i] = my_array[i];
}
   System.out.println("New Array: "+Arrays.toString(new_array));
 }
 }
 

Sample Output:

Source Array : [25, 14, 56, 15, 36, 56, 77, 18, 29, 49]                                                       
New Array: [25, 14, 56, 15, 36, 56, 77, 18, 29, 49]

Flowchart:

Flowchart: Java exercises: Copy an array by iterating the array

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Java: Tips of the Day

Syntax for creating a two-dimensional array in Java

Try the following :

int[][] multi = new int[5][10];

... which is a short hand for something like this:

int[][] multi = new int[5][];
multi[0] = new int[10];
multi[1] = new int[10];
multi[2] = new int[10];
multi[3] = new int[10];
multi[4] = new int[10];

Note that every element will be initialized to the default value for int, 0, so the above are also equivalent to:

int[][] multi = new int[][]{
  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
  { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
};

Ref: https://bit.ly/3vYSxFz