Codehs 8.1.5 Manipulating 2d — Arrays

System.out.println();

CodeHS 8.1.5 requires updating the final elements of three 2D array rows, replacing placeholder zeros with specific values calculated using a helper method, including the first row's length, the total element count, and sum of specific elements. Implementation involves iterating through rows to sum lengths and using the arr[row][col] = value formula to update indices, taking care to avoid out-of-bounds errors. For code examples and further explanation, see the solutions on Reddit . Codehs 8.1.5 Manipulating 2d Arrays

// Task 2: Write a function that returns a new 2D array with only the even numbers function getEvens(matrix) // Your code here System

What is the you're trying to implement (e.g., "swap rows" or "change specific characters")? // Task 2: Write a function that returns

"Write a method that takes a 2D array and returns the sum of the diagonal elements"

// Task 3: Write a function that swaps the first and last row function swapFirstLastRow(matrix) // Your code here