Question

JAVA

Write a Java statement (just a single statement) to sort the second row (first row is at index 0) of the following matrix using Arrays.sort() method.

double[][] matrix = {{1.2, 3.4}, {4.2, 2.1, 3.1}, {4.2, 1.9}};

Answer 1

Single statement to sort the second row of the matrix is :

Arrays.sort(matrix[1]);

Full code :

import java.io.*;
import java.util.Arrays;

class Sorting{
   public static void main (String[] args) {
       double[][] matrix = {{1.2, 3.4}, {4.2, 2.1, 3.1}, {4.2, 1.9}};//creating matrix
       Arrays.sort(matrix[1]); //sorting 2nd row by help of Arrays.sort() which is the reqyuired answer

       //printing matrix after sorting 2nd row
       for (int i = 0; i < matrix.length; i++) {
           for (int j = 0; j < matrix[i].length; j++){
               System.out.print(matrix[i][j] + " ");
               System.out.println();
           }
       }
   }
}

Screenshot :

Full Code :

1 2 3 4 5 6 7 8 9 10 11 12 13 14 import java.io.*; import java.util.Arrays; class Sorting public static void main(String[] args) { double[][] matrix = {{1.2, 3.4} {4.2, 2.1, 3.1}, {4.2, 1.9}};//creating matrix Arrays.sort(matrix[1]); // sorting 2nd row by help of Arrays.sort() which is the reqyuired answer //printing matrix after sorting 2nd row for (int i = 0; i < matrix.length; i++) { for (int j = 0; j < matrix[i].length; j++){ System.out.print(matrix[i][j] + " "); System.out.println(); } 15 } 16 17 |

Output :

1.23.4 2.13.14.2 4.2 1.9