DSA-PS-Java-Programs/MatrixMultiplication.java at master · codec-akash/DSA-PS-Java-Programs · GitHub

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import java.util.Scanner;

//Other imports go here, Do NOT change the class name

class MatrixMultiplication

{

public static void main(String[] args)

{

Scanner sc=new Scanner(System.in);

int x=sc.nextInt();

while(x>0)

{

int r1,c1,r2,c2,i,j;

r1=sc.nextInt();

c1=sc.nextInt();

int arr[][]=new int[r1][c1];

for(i=0;i<r1;i++)

{

for(j=0;j<c1;j++)

{

arr[i][j]=sc.nextInt();

}

r2=sc.nextInt();

c2=sc.nextInt();

int b[][]=new int[r2][c2];

int res[][]=new int[r1][c2];

for(i=0;i<r2;i++)

{

for(j=0;j<c2;j++)

{

b[i][j]=sc.nextInt();

}

for(i=0;i<r1;i++)

{

for(j=0;j<c2;j++)

{

int sum=0;

for(int k=0;k<r2;k++)

{

sum+=arr[i][k]*b[k][j];

}

res[i][j]=sum;

}

for(int r=0;r<r1;r++)

{

for(int y=0;y<c2;y++)

System.out.print(res[r][y]+" ");

System.out.println();

}

x--;

}

sc.close();

}

DSA-PS-Java-Programs/MatrixMultiplication.java at master · codec-akash/DSA-PS-Java-Programs · GitHub

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