Adding Two 2D Arrays And Two 2D ArrayLists

In this article, we will add two 2D Arrays and two 2D ArrayLists.

 Given two 2D Arrays and two 2D ArrayLists of the same dimensions, our goal is to add them together element-wise and store the result in new 2D Arrays or ArrayLists. Each element in the resulting Arrays or ArrayLists will be the sum of the corresponding elements from the input Arrays or ArrayLists.

As you have now understood the concept, first try to solve the problem by yourself before you look into the below solution.

Approach

 To add two 2D arrays or two 2D ArrayList, we'll follow similar steps for both cases:


Step-by-Step Solution

 Step 1: Initialize the Result Arrays or ArrayLists

 We'll start by creating new 2D arrays or ArrayLists with the same dimensions as the input arrays or ArrayLists to store the sum.

 For 2D Arrays

For 2D ArrayLists

Step 2: Perform Element-wise Addition

 Next, we'll iterate through each element of the Arrays or ArrayLists using nested loops and add the corresponding elements from both input Arrays or ArrayLists.

 For 2D Arrays

For 2D ArrayLists

Step 3: Return the Result

 After adding all corresponding elements, we'll have the sum stored in the result Arrays or ArrayLists. We'll return these Arrays or ArrayLists as the final result.

 For 2D Arrays

For 2D ArrayLists

Code Implementation

 Here's the complete code implementing the above approach for both 2D arrays and 2D ArrayLists:

Exercise


Write a program to find difference between 2 2D Arrays and 2 2D ArrayList.