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Thread: Help on 2D Multi Table Array

  1. #1
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    Default Help on 2D Multi Table Array

    I need help with my code... my desired out put should be

    1 2 3
    _______
    1|1 2 3
    2|2 4 6

    can someone help me on how to add the header and the other column at the right side area... thanks!!

    import java.io.*;
     
    public class Test1 {
    	public static void print_array(int[][] num){
     
    	for (int i=1; i<num.length; i++) {
    	for (int j=1; j<num[i].length; j++)
    		System.out.print(" " +num[i][j] + " " );
    		System.out.println();
    }	
    }
    public static void main(String[] args) throws IOException {
      BufferedReader act2 = new BufferedReader ( new InputStreamReader( System.in ) );
    	String row, column;
    	int cols = 0;
    	int rows = 0;
     
    		System.out.print("Enter A Desired Number of Column(s): ");
    		column= act2.readLine();
    		cols= Integer.parseInt( column );
     
    		System.out.print("Enter A Desired Number of Row(s): ");
     		row= act2.readLine();
    		rows= Integer.parseInt( row );
     
    	int values[][] = new int[rows+1][cols+1];
    	int [][] m = new int[rows][];
     
    		for (int i=1; i < rows; i++)
    			m[i] = new int[cols];
    		for (int i=0; i < values.length; i++)
    		for (int j=0; j < values[i].length; j++)
    			values[i][j] = i*j;
     
     	System.out.println("Activity #2 Multiplication Table");
    	print_array(values);
    }
     }


  2. #2
    Member DanBrown's Avatar
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    Default Re: Help on 2D Multi Table Array

    import java.io.*;
     
    public class Test1 {
    	public static void print_array(int[][] num){
     
    [B]	System.out.print("   ");
    	for (int i=1; i<num[0].length; i++) {
    		System.out.print(i+"  ");
    	}
     
    	System.out.println();
    	for (int i=1; i<=num[0].length; i++) {
    		System.out.print("___");
    	}
     
    	System.out.println();
    [/B]	
     
    	for (int i=1; i<num.length; i++) {
    [B]		System.out.print(""+i+"|");[/B]
    		for (int j=1; j<num[i].length; j++){
    			System.out.print(" " +num[i][j] + " " );	
    		}
    		System.out.println();
    	}	
    }
    public static void main(String[] args) throws IOException {
      BufferedReader act2 = new BufferedReader ( new InputStreamReader( System.in ) );
    	String row, column;
    	int cols = 0;
    	int rows = 0;
     
    		System.out.print("Enter A Desired Number of Column(s): ");
    		column= act2.readLine();
    		cols= Integer.parseInt( column );
     
    		System.out.print("Enter A Desired Number of Row(s): ");
     		row= act2.readLine();
    		rows= Integer.parseInt( row );
     
    	int values[][] = new int[rows+1][cols+1];
    	int [][] m = new int[rows][];
     
    		for (int i=1; i < rows; i++)
    			m[i] = new int[cols];
    		for (int i=0; i < values.length; i++)
    		for (int j=0; j < values[i].length; j++)
    			values[i][j] = i*j;
     
     	System.out.println("Activity #2 Multiplication Table");
    	print_array(values);
    }
     }
    Thanks and Regards
    Dan Brown

    Common Java Mistakes

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