function zeroOutNegatives(matrix) for (let i = 0; i < matrix.length; i++) for (let j = 0; j < matrix[i].length; j++) if (matrix[i][j] < 0) matrix[i][j] = 0;
In CodeHS 8.1.5, "Manipulating 2D Arrays," the objective is typically to modify specific elements or rows within a 2D array (a list of lists) using nested loops or direct indexing. Codehs 8.1.5 Manipulating 2d Arrays
The problem: Row 5 (index 4) had accidentally been duplicated over Row 7 (index 6). She needed to shift all rows from index 6 upward back to their original positions—but the original data was corrupted. She had to rebuild Row 6 from the average of Rows 5 and 7. function zeroOutNegatives(matrix) for (let i = 0; i
She touched the glowing cell. A shimmer of light. The 12 moved to the tinsmith, the -3 moved to the bakery. The grid hummed in harmony. She had to rebuild Row 6 from the average of Rows 5 and 7
var array = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]; for (var i = 0; i < array.length; i++) array[i].splice(1, 1); // remove column at index 1
Since "CodeHS 8.1.5" typically refers to the exercise (often part of the AP Computer Science A or Intro to CS curriculum in Java), this article is tailored to explain the concepts and logic needed to solve that specific challenge.
In 8.1.5, you’ll likely encounter a few specific ways to alter your data: Replacing Values: