9.1.6 Checkerboard V1 Codehs Site
If your actual CodeHS prompt differs, tell me the exact statement and I will adapt this write-up.
public class Checkerboard extends ConsoleProgram public static void main(String[] args) int size = 8; int[][] board = new int[size][size]; for (int row = 0; row < size; row++) for (int col = 0; col < size; col++) // Check if the sum of row and col is even if ((row + col) % 2 == 0) board[row][col] = 1; // "Color A" else board[row][col] = 0; // "Color B" // Helper method to print the board printBoard(board); private static void printBoard(int[][] board) for (int[] row : board) for (int val : row) System.out.print(val + " "); System.out.println(); Use code with caution. Copied to clipboard Visual Representation Key Concepts to Remember : int[][] board = new int[rows][cols];
The key to identifying a "checkerboard" pattern is the relationship between the ( ) and the column index ( A cell belongs to one "color" if the sum of its indices ( ) is even . 9.1.6 checkerboard v1 codehs
To draw a grid, you cannot just use a single loop. You need a structure: Outer Loop (Rows): Controls the vertical position ( coordinate). Inner Loop (Columns): Controls the horizontal position ( coordinate) within that specific row.
To achieve this, the program must evaluate the position of each cell based on its row and column indices. Key Programming Concepts Used If your actual CodeHS prompt differs, tell me
1 0 1 0 1 0 1 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 0 1 0 1 0 1 0 1
Computers draw graphics using pixel offsets from the top-left corner (0,0) . Multiplying the row and column iteration variables ( r and c ) by the SQUARE_SIZE guarantees that no two squares overlap and no gaps are left behind. Common Pitfalls and Debugging Tips You need a structure: Outer Loop (Rows): Controls
// 1. Create a new Rectangle object Rectangle rect = new Rectangle();
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Typically for CodeHS 9.1.6: