*8.10 (Largest row and column) Write a program that randomly fills in 0s and 1s into a 4-by-4 matrix, prints the matrix, and finds the first row and column with the most 1s. Here is a sample run of the program:
0011
0011
1101
1010
The largest row index: 2
The largest column index: 2
public class Exercise_10 { public static void main(String[] args) { // create 4 by 4 matrix int[][] matrix = new int[4][4]; // generate 1's and 0's for each each rows and columns // and track largest row index with the most ones int largestRI = 0; int largest = -1; for (int i = 0; i < matrix.length; i++) { int rowCount = 0; for (int k = 0; k < matrix[i].length; k++) { matrix[i][k] = (int)(Math.random() * 2); rowCount += matrix[i][k]; } if (rowCount > largest) { largestRI = i; largest = rowCount; } } // find largest column index int largestCI = 0; largest = -1; for (int k = 0; k < matrix[0].length; k++) { int columnCount = 0; for (int i = 0; i < matrix.length; i++) { columnCount += matrix[i][k]; } if (columnCount > largest) { largest = columnCount; largestCI = k; } } // display matrix for (int i = 0; i < matrix.length; i++) { for (int k = 0; k < matrix[i].length; k++) { System.out.printf("%d", matrix[i][k]); } System.out.printf("\n"); } System.out.println("The largest row index: " + largestRI); System.out.println("The larges column index: " + largestCI); }
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