Codehs 8.1.5 Manipulating 2d Arrays Jun 2026

: If the array stores String objects, remember to use .equals() for comparisons rather than == . If it stores objects, check for null values before manipulating them.

// Task 3: Write a function that swaps the first and last row function swapFirstLastRow(matrix) // Your code here Codehs 8.1.5 Manipulating 2d Arrays

If you share the exact prompt or what the problem asks you to do, I can write the exact solution for you. : If the array stores String objects, remember to use

for (int r = 0; r < grid.length; r++) { for (int c = 0; c < grid[r].length; c++) { Use code with caution. Step 3: Apply the Manipulation Logic Inside the inner loop, target grid[r][c] . if (grid[r][c] % 2 == 0) grid[r][c] *= 2; Use code with caution. Example Rule B: Set elements in the first column to 0 if (c == 0) grid[r][c] = 0; Use code with caution. Step 4: Close the Loops Ensure all brackets close properly to avoid syntax errors. Common Mistakes to Avoid on CodeHS Codehs 8.1.5 Manipulating 2d Arrays

If you’ve made it to Lesson 8.1.5 in CodeHS, you’ve already learned that a 2D array is essentially an array of arrays