Codehs 8.1.5 Manipulating 2d Arrays Verified [TRUSTED]

Mastering CodeHS 8.1.5: Manipulating 2D Arrays In the CodeHS Nitro curriculum, is a pivotal moment for AP Computer Science A students. While the previous lessons introduce how to create and access 2D arrays, this lesson focuses on the "how-to" of data transformation—moving from simply storing numbers to actually changing them across two dimensions. Understanding the Core Objective

: Accessing a value requires two indices: array[row][column] . Codehs 8.1.5 Manipulating 2d Arrays

You need to define a method—often called fixArray or updateValue —that takes the array, the row index, the column index, and the new value. Mastering CodeHS 8

public static void swapColumns(int[][] arr, int colA, int colB) for (int row = 0; row < arr.length; row++) int temp = arr[row][colA]; arr[row][colA] = arr[row][colB]; arr[row][colB] = temp; the row index