setMatricesZero.java

//Question: Given m x n integer matrix. if an element is zero, set its entire row and column to zero.
package twoDArray;
import java.util.Scanner;
public class setMatricesZero {

    public static void main(String[] args) {
        System.out.print("ENTER THE NUMBER OF ROWS AND NUMBER OF COLUMNS: ");
        Scanner sc=new Scanner(System.in);
        int m=sc.nextInt();
        int n=sc.nextInt();
        int[][] arr=new int[m][n];
        System.out.println("ENTER THE ELEMENTS:");
        for (int i = 0; i < m; i++) {
            for (int j = 0; j < n; j++) {
                arr[i][j]=sc.nextInt();
            }
        }

        int[] row=new int[m];
        int[] col=new int[n];

        for(int i=0; i<m; i++){
            row[i]=arr[i][0];
        }
        for(int j=0; j<n; j++){
            col[j]=arr[0][j];
        }

        for(int i=0; i<m; i++){
            for(int j=0; j<n; j++){
                if(arr[i][j]==0){
                  row[i]=0;
                  col[j]=0;  
                }
            }
        }

        for(int i=0; i<m; i++){
             if(row[i]==0){
                  for(int j=0; j<n; j++){
                    arr[i][j]=0;
                  }
             }
        }

        for(int j=0; j<n; j++){
                if(col[j]==0){
                  for(int i=0; i<m; i++){
                    arr[i][j]=0;
                  }
                }
            }

         System.out.println("FINAL ARRAY IS:");
        for (int i = 0; i < m; i++) {
            for (int j = 0; j < n; j++) {
                System.out.print(arr[i][j]);
            }
            System.out.println();
        }
        
    }
}