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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:
Create new 2D Arrays or ArrayLists with the same dimensions as the input Arrays or ArrayLists to store the result.
Iterate through each element of the Arrays or ArrayLists using nested loops.
Add the corresponding elements from both input Arrays or ArrayLists and store the result in the new Arrays or ArrayLists.
Return the new Arrays or ArrayLists containing the sum of the input Arrays or ArrayLists.
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.
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