arrayMULT.java

import java.io.*;
class arrayMULT
{
    static int i,j,k,p,q,m,n;
    

    public static void main(String args[])throws IOException
    {
        BufferedReader buf=new BufferedReader(new InputStreamReader(System.in));
        System.out.println("ENTER DIMENSIONS OF 1st ARRAY [][]");
        m=Integer.parseInt(buf.readLine());
        n=Integer.parseInt(buf.readLine());
        System.out.println("ENTER DIMENSIONS OF 2nd ARRAY  [][]");
        p=Integer.parseInt(buf.readLine());
        q=Integer.parseInt(buf.readLine());

        if(n!=p)
            System.out.println("ARRAY NOT SUITABLE FOR MULTIPLICATION");

        else
        {
            int a[][]=new int[m][n];
            int b[][]=new int[p][q];
            int c[][]=new int[m][q];
            System.out.println("ENTER ELEMENTS OF 1st ARRAY");
           
                for(i=0;i<m;i++)
                {
                    for(j=0;j<n;j++)
                    {
                        a[i][j]=Integer.parseInt(buf.readLine());
                    }
                }
            System.out.println("ENTER ELEMENTS OF 2nd ARRAY");
           
                for(i=0;i<p;i++)
                {
                    for(j=0;j<q;j++)
                    {
                        b[i][j]=Integer.parseInt(buf.readLine());
                    }
                }
            for(i=0;i<m;i++)
            {
                for(j=0;j<q;j++)
                {
                    for(k=0;k<n;k++)
                    {
                        c[i][j]+=a[i][k]*b[k][j];
                    }
                }
            }
            System.out.println("PRODUCT OF ARRAYS");
            for(i=0;i<m;i++)
            {
                for(j=0;j<q;j++)
                {
                    System.out.print(c[i][j]+"\t");
                }
                System.out.println();
            }
        }
    }
}