Array Format Program ISC 2019 Practical

Write a program to declare a single-dimensional array a[] and a square matrix b[][] of size N, where N > 2 and N < 10. Allow the user to input positive integers into the single dimensional array.

Perform the following tasks on the matrix:

a) Sort the elements of the single-dimensional array in ascending order using any standard sorting technique and display the sorted elements.

b) Fill the square matrix b[][] in the following format.
If the array a[] = {5, 2, 8, 1} then, after sorting a[] = {1, 2, 5, 8}
Then, the matrix b[][] would fill as below:

1    2    5    8
1    2    5    1
1    2    1    2
1    1    2    5

c) Display the filled matrix in the above format.

Test your program for the following data and some random data:

Example 1:
INPUT:
N = 3
ENTER ELEMENTS OF SINGLE DIMENSIONAL ARRAY: 3 1 7
OUTPUT:
SORTED ARRAY: 1 3 7
FILLED MATRIX

1    3    7
1    3    1
1    1    3

Example 2:
INPUT:
N = 13
OUTPUT:
MATRIX SIZE OUT OF RANGE

import java.io.*;
class ArrayFormat{
    public static void main(String args[])throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        System.out.print("N = ");
        int n = Integer.parseInt(br.readLine());
        if(n < 3 || n > 9){
            System.out.println("MATRIX SIZE OUT OF RANGE.");
            return;
        }
        int a[] = new int[n];
        int b[][] = new int[n][n];
        System.out.println("ENTER ELEMENTS OF SINGLE DIMENSIONAL ARRAY:");
        for(int i = 0; i < n; i++)
            a[i] = Math.abs(Integer.parseInt(br.readLine()));
        for(int i = 0; i < n; i++){
            for(int j = 0; j < n - 1 - i; j++){
                if(a[j] > a[j + 1]){
                    int temp = a[j];
                    a[j] = a[j + 1];
                    a[j + 1] = temp;
                }
            }
        }
        System.out.print("SORTED ARRAY:");
        for(int i = 0; i < n; i++)
            System.out.print(a[i] + " ");
        System.out.println();
        int len = n;
        for(int i = 0; i < n; i++){
            int j = 0;
            for(j = 0; j < len; j++)
                b[i][j] = a[j];
            int k = 0;
            while(j < n){
                b[i][j] = a[k];
                j++;
                k++;
            }
            len--;
        }
        System.out.println("FILLED MATRIX");
        for(int i = 0; i < n; i++){
            for(int j = 0; j < n; j++){
                System.out.print(b[i][j] + "\t");
            }
            System.out.println();
        }
    }
}