I'm stuck

**iank** · November 5th, 2009, 12:48 AM

my programs with difficulty are below:

Program 20: Alphabet.java
Write a program that will receive 3 words, print out the word that comes last alphabetically despite whether it is uppercase or lowercase. Do this 3 times.

I put: Please tell me my error.

import java.lang.String;
import java.util.Scanner;
public class Alphabet
{
    public static void main(String[] args)
    {
    Scanner input=new Scanner(System.in);
    System.out.println("Please enter a word");
    String wordone=input.next();
    System.out.println("Please enter another word");
    String wordtwo=input.next();
    System.out.println("Please enter a third word");
    String wordthree=input.next();
    String wordfour=wordone.compareTo(wordtwo);
    String wordfive=wordtwo.compareTo(wordthree);
    String wordsix=wordone.compareTo(wordthree);
    System.out.println (wordfour);
    System.out.println (wordfive);
    System.out.println (wordsix);
 
   }
 
}

Program 21: Middle.java
Write a program that will receive a person’s full name in one String object (don’t read in 3 names). Then receive a second person’s full name. Print out whether the 2 people have the same middle name or not. Do this 3 times.

I am unable to understand how to print out only the middle name.

I put:

import java.util.Scanner;
public class Middle
{
   public static void main(String[] args) 
   {
   Scanner input=new Scanner(System.in);
   System.out.println("Please enter your first name");
   String firstone=input.next();
   System.out.println("Please enter your middle name");
   String middleone=input.next();
   System.out.println ("Please enter your last name");
   String lastone=input.next();
   for(int i=0;i<length;i++)
   {
   System.out.println(middleone);
   }
 
  }
 
}

Program 22: WeCanWorkItOut.java
Write a program that will receive 5 numbers and print out the largest number and the smallest number. Print the average.

import java.util.Scanner;
import java.util.Random;
public class GuessWhat
{
	public static void main (String[] args) 
	{
	GuessWhat example= new GuessWhat();
	example.getRandomNumber();
	}
 
 
    public void getRandomNumber()
    {
    int min=50;
    int max=100;
    Random randGenerator= new Random();
    int randomNum=randGenerator.nextInt(max-min+1)+ min;
    System.out.println("Random number generated is:" + randomNum);
    }
 
}

PLEASE HELP ME WITH OTHER PROGRAMS ALSO BECAUSE MY DEADLINE IS TOMORROW.
Sincerely,
ian

**iank** · November 5th, 2009, 12:51 AM

Program 22: WeCanWorkItOut.java
Write a program that will receive 5 numbers and print out the largest number and the smallest number. Print the average.

import java.util.Scanner;
public class WeCanWorkItOut
{
    public static void main(String[] args) 
    {    
    Scanner input=new Scanner(System.in);
    System.out.println("Please enter a number");
    double num1=input.nextDouble();
    System.out.println("Please enter a second number");
    double num2=input.nextDouble();
    System.out.println("Please enter a third number");
    double num3=input.nextDouble();
    System.out.println("Please enter a fourth number");
    double num4=input.nextDouble();
    System.out.println("Please enter a fifth and final number");
    double num5=input.nextDouble();
 
    if(num1<num2)
    if(num2<num3)
    if(num3<num4)
    if(num4<num5)
    {
    System.out.println("The first number entered is the smallest number");
    }
    else
    {
    System.out.println("Some of the numbers might be equal");
    }
 
    if(num1>num2)
    if(num2>num3)
    if(num3>num4)
    if(num4>num5)
    {
    System.out.println("The first number entered is the largest number");
    }
    else
    {
    System.out.println("Some of the numbers might be equal");
    }
 
    if(num1<=num2)
    if(num2<=num3)
    if(num3<=num4)
    if(num4<=num5)
    {
    System.out.println("There isn't a number with the lowest value as some or all of these numbers may be equal");
    }
    else
    {
    System.out.println("Try entering other numbers");
    }
 
    if(num1>=num2)
    if(num2>=num3)
    if(num3>=num4)
    if(num4>=num5)
    {
    System.out.println("There isn't a number with the highest value as some or all of the values may be equal");
    }
    else
    {
    System.out.println("Try entering other numbers");
    }
 
    double average;
    average= (num1+num2+num3+num4+num5)/5;
    System.out.println ("Average:"+average);
 
    }
 
}

Program 24 Shoot.java
Program Rock-Paper-Scissors. The computer will randomly choose a rock, paper, or scissors. The user will input their choice. Tell the user who won and what was thrown. Do this 3 teams and give the overall win total.

import java.util.Scanner;
import java.util.Random;
 
public class FinalShoot
{
  public static void main(String[] args)
  {
    Scanner scan= new Scanner (System.in);
    String personPlay;    //User's play -- "R", "P", or "S"
    String computerPlay;  //Computer's play -- "R", "P", or "S"
    int computerInt;      //Randomly generated number used to determine
                          //computer's play
 
    System.out.println ("Enter your play: r, p, or s");
    personPlay = scan.nextLine();
    personPlay = personPlay.toUpperCase();
 
    System.out.println("You selected: " + personPlay);
 
    //an array that consists of R, P and S
    String[] computerPlayArray = {"R", "P","S"};
    Random generator = new Random();
    int computerSelected = generator.nextInt(computerPlayArray.length);
    //System.out.println ("From 1 to 3: " + computerPlay);
    //int play = generator.nextInt(3) + 1;
 
    //int computerPlay = computerInt;
    //int choice1=R;
    //int choice2=P;
    //int choice3=S;
    computerPlay = computerPlayArray[computerSelected];
    System.out.println ("computer Play:" + computerPlay);
 
    if (personPlay.equals(computerPlay)){
       System.out.println ("It's a tie!");
    }
    else if (personPlay.equals("R")){
        if (computerPlay.equals("S"))
           System.out.println ("Rock crushes scissors. You win!");
        else if (computerPlay.equals("P"))
           System.out.println ("Paper beats rock. Computer wins!");
    }
    else if (personPlay.equals("P")){
        if (computerPlay.equals("R"))
            System.out.println ("Paper beats rock. You win!");
        else if (computerPlay.equals("S"))
            System.out.println ("Scissors cut paper. Computer wins!");
    }
    else if (personPlay.equals("S")){
         if (computerPlay.equals("R"))
             System.out.println ("Rock crushes scissors. Computer wins!");
         else if (computerPlay.equals("P"))
             System.out.println ("Scissors cut paper. You win!");
    }
 
 
     }
}

Program 25 TwoFace.java
The computer will generate a coin flip and print out if it was heads or tails. Do this 10 times and print out the results.

import java.util.Random;
public class TwoFace
{
	public static void main (String[] args)
	{
	TwoFace example= new TwoFace();
	example.getHeadCount();
	}
 
 
    public void getRandomItem();
    {
    	String[]coinSides={"head","tail"};
    	Random randgenerator= new Random();
    	int randomNum= randgenerator.nextInt(coinSides.length);
 
    }
 
    	for(int i=0;i<=10;i++)

**copeg** · November 5th, 2009, 10:21 AM

That's a lot for a single post, so I'm not going to go through all. But, for the first problem: read the API for String compareTo(Stirng s) method, it returns an int and not a string. Use these to compare equality and a series of conditionals to test the order. Alternatively (and this may help for the other problems as well) look at Arrays (Java 2 Platform SE v1.4.2), namely the sort method (hint read in values to an array)

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