Codehs 8.1.5 Manipulating 2d Arrays //free\\

Write a method swapColumns(int[][] arr, int colA, int colB) .

function reverseEachRow(matrix) let result = []; for (let i = 0; i < matrix.length; i++) let reversedRow = []; for (let j = matrix[i].length - 1; j >= 0; j--) reversedRow.push(matrix[i][j]); Codehs 8.1.5 Manipulating 2d Arrays

// Example: Doubling every value in the 2D array public void doubleArray(int[][] arr) for (int r = 0; r < arr.length; r++) for (int c = 0; c < arr[r].length; c++) arr[r][c] = arr[r][c] * 2; Use code with caution. 2. Searching and Replacing Write a method swapColumns(int[][] arr, int colA, int colB)