Question

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

Example 3:
INPUT:
N = 5
ENTER ELEMENTS OF SINGLE DIMENSIONAL ARRAY:10 2 5 23 6
OUTPUT:
SORTED ARRAY:2 5 6 10 23
FILLED MATRIX

2   5   6   10  23
2   5   6   10  2
2   5   6   2   5
2   5   2   5   6
2   2   5   6   10

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Code

import java.util.Scanner;

public class arraySort
{
    public static void main(String args[])
    {
        int i=0,j=0,k=0,len=0,n=0,temp=0;
        int a[],b[][];
        Scanner sc=new Scanner(System.in);
        System.out.print("N = ");
        n = sc.nextInt();
        if(n < 3 || n > 9)
        {
            System.out.println("MATRIX SIZE OUT OF RANGE.");
            return;
        }
        a= new int[n];
        b= new int[n][n];
        System.out.println("ENTER ELEMENTS OF SINGLE DIMENSIONAL ARRAY:");
        for(i = 0; i < n; i++)
        {
            a[i] = Math.abs(sc.nextInt());
        }
        for(i = 0; i < n; i++)
        {
            for(j = 0; j < n; j++)
            {
                if(a[i] < a[j])
                {

                    temp = a[i];
                    a[i] = a[j];
                    a[j] = temp;
                }
            }
        }
        System.out.print("SORTED ARRAY:");
        for(i = 0; i < n; i++)
        {
            System.out.print(a[i] + " ");
        }
        System.out.println();
        len = n;
        for(i = 0; i < n; i++)
        {
            j = 0;
            for(j = 0; j < len; j++)
            {
                b[i][j] = a[j];
            }
            k = 0;
            while(j < n)
            {
                b[i][j] = a[k];
                j++;
                k++;
            }
            len--;
        }
        System.out.println("FILLED MATRIX");
        for(i = 0; i < n; i++)
        {
            for(j = 0; j < n; j++)
            {
                System.out.print(b[i][j] + "\t");
            }
            System.out.println();
        }
    }
}