import java.util.Scanner;

public class PhoneNumbers
{
 public static void main(String[] args){
    Scanner input;

       Scanner scan = new Scanner(System.in);//get user input
   
       System.out.print( "Please enter a phone number:");
    
       String word = scan.nextLine();

import java.util.Scanner;

public class CountLetters
{
  public static void main(String[] args)
  {
    Scanner input;

    input = new java.util.Scanner(System.in);
  
  String s;
  int count = 0;
    
    
    System.out.print(

import java.util.Scanner;
import java.io.File;
import java.io.PrintWriter;

public

public class SumColumn 
{
  public static void main( String[] args ) 
  {
    int[][] grid = {{1, 2, 3}, {4, 5, 6}}; // array initializer for 2D array
    
    print2DArray("The array is: ", grid);
    
    sumColumn(grid);// write method call to sumColumn here
  }
   
  // print out a 2D array
  public static void print2DArray( String message, int[][] a

import java.util.Scanner;
  
public class MathTutor
{
  public static void main( String[] args ) 
  {  
    int choice;
    
    choice = printMenu();
    while (choice != 4)
    {
      if ( choice == 1 )
        additionTutor();
      else if ( choice == 2 )
        substractionTutor();
      else if ( choice == 3 )