Matrix problem in java.

problem: 

            Write an algorithm such that if an element in an MxN matrix is 0, its entire row and column is set to 0.

for example:

A matrix of order 3X3 contains elemennts like 

124
037
598

after performing algorithm out put will be

024
000
098


solution:


package logics;

public class matrixProblem {
    public static void main(String []a)
    {
        int [][]data=new int[][]{{1,2,4},{0,3,7},{5,9,8}};
        System.out.print("Before completing task \n");
        printdata(data);
        getdata(data);
    }

public static void getdata(int [][] mat)
{
    int rowlength=mat.length;
    int collength=mat[0].length;
    int row[]=new int[rowlength];
    int col[]=new int[collength];
    for(int i=0;i<rowlength;i++)
    {
            for(int j=0;j<collength;j++)
            {
                if(mat[i][j]==0)
                {
                    row[i]=1011;//am setting reference as 1011  where i need to set 0 .
                    col[j]=1011;
                }
            }
   
    }
    for(int i=0;i<rowlength;i++)
    {
            for(int j=0;j<collength;j++)
            {
                if(row[i]==1011 || col[j]==1011)
                {
                    mat[i][j]=0;
                }
            }
    }
    //printing matrix
    System.out.print("After completing task \n");
    printdata(mat);
}
public static void  printdata(int [][]data)
{
    for(int i=0;i<data.length;i++)
    {
        for(int j=0;j<data[0].length;j++)
        {
            System.out.print(data[i][j]);
        }
        System.out.println();
    }
}
}//class


 output:
------------------------------------------------
Before completing task
124
037
598
After completing task
024
000
098