Page 3 - Alternating vowels and consonants

Dev Shed Forums Sponsor:

#31

February 24th, 2013, 03:38 PM

NormR

Contributing User

Join Date: Aug 2010

Location: SW Missouri

Posts: 2,955

Time spent in forums: 1 Week 6 Days 2 h 53 m 34 sec
Reputation Power: 345

Quote:

the string can only contain Vowels and Consonants

Then the code only needs to test for vowels. If the letter is NOT a vowel, it is a consonant.

The code only needs ONE loop that looks at each letter and the next letter and makes sure they are different.
The type of the first letter is not important. What needs to be tested is that the types of two adjacent letters is different.

#32

February 24th, 2013, 03:41 PM

ctroop4ever

Contributing User

Join Date: Feb 2013

Posts: 39

Time spent in forums: 4 h 15 m 8 sec
Reputation Power: 1

Quote:

Originally Posted by NormR

I actually can't do it, this has to be finished tonight and im obviously not getting this, I know what to do but when I look at the codes I just go blank, thank you for trying though.
Best wishes

#33

February 24th, 2013, 03:46 PM

NormR

Contributing User

Join Date: Aug 2010

Location: SW Missouri

Posts: 2,955

Time spent in forums: 1 Week 6 Days 2 h 53 m 34 sec
Reputation Power: 345

Put the current program to rest for a while.
Write a simpler testing program that takes a String, and in a loop gets each letter of the String and prints out a message saying if that letter is a vowel or a consonant.

When that works, you can move on to the next step.

#34

February 24th, 2013, 04:15 PM

ctroop4ever

Contributing User

Join Date: Feb 2013

Posts: 39

Time spent in forums: 4 h 15 m 8 sec
Reputation Power: 1

Quote:

Originally Posted by NormR

Okay, I will try do that first

#35

February 24th, 2013, 04:28 PM

ctroop4ever

Contributing User

Join Date: Feb 2013

Posts: 39

Time spent in forums: 4 h 15 m 8 sec
Reputation Power: 1

Okay I have that done, I created a program like that a view days ago

#36

February 24th, 2013, 04:31 PM

NormR

Contributing User

Join Date: Aug 2010

Location: SW Missouri

Posts: 2,955

Time spent in forums: 1 Week 6 Days 2 h 53 m 34 sec
Reputation Power: 345

Post the code and its output.

#37

February 24th, 2013, 04:33 PM

ctroop4ever

Contributing User

Join Date: Feb 2013

Posts: 39

Time spent in forums: 4 h 15 m 8 sec
Reputation Power: 1

Quote:

Originally Posted by NormR

Post the code and its output.

Code:

import javax.swing.JOptionPane;
public class AlternatingVowelsAndConsonants 
{
	public static void main(String[] args)
	{
		String userInput;

		char d;
		
		int vow = 0, con = 0;

		userInput = JOptionPane.showInputDialog(null, "Enter a word ");

		String strippedInput = userInput.replaceAll("\\W", "");

		String strippedInput1 = strippedInput.toLowerCase();

		int c = strippedInput1.length();
		
if (userInput.equals(""))
			
		{
			JOptionPane.showMessageDialog(null, "Invalid. Input is required.");
		}

else 
	
	
	for(int index = 0; index <= c-1; index++)
		
	{
		
	d = strippedInput1.charAt(index);
	
	if (d == 'a' || d == 'A' || d == 'e' || d == 'E' || d == 'i' || d == 'I'
			|| d == 'o' || d == 'O' || d == 'u' || d == 'U')
	
	{
	vow++;
	
	}
	
	else
	{
	con++;
	}
	}
	System.out.println("The no of vowels are " + vow);
	System.out.println("the no of consonants are " + con);
	}
}

#38

February 24th, 2013, 04:40 PM

NormR

Contributing User

Join Date: Aug 2010

Location: SW Missouri

Posts: 2,955

Time spent in forums: 1 Week 6 Days 2 h 53 m 34 sec
Reputation Power: 345

Now add code immediately following where the counters (vow and con) are incremented to look at the next letter (at index+1) and test that its type (vowel or consonant) is different than the type just found. You'll need to change the looping control to use < vs <= to keep from going past the end of the String.

#39

February 24th, 2013, 04:48 PM

ctroop4ever

Contributing User

Join Date: Feb 2013

Posts: 39

Time spent in forums: 4 h 15 m 8 sec
Reputation Power: 1

Quote:

Originally Posted by NormR

I dont know how to do that, how do I test that its type is different from the type just found??

#40

February 24th, 2013, 04:53 PM

NormR

Contributing User

Join Date: Aug 2010

Location: SW Missouri

Posts: 2,955

Time spent in forums: 1 Week 6 Days 2 h 53 m 34 sec
Reputation Power: 345

Quote:

test that its type is different from the type just found??

When you have found a vowel and are incrementing the vow variable, you know that the current type is a vowel. The different type will be a consonant. So look at the next letter and see if it a consonant.

If you have found a consonant and are incrementing the con variable, you know that the current type is a consonant. The different type will be a vowel. Look at the next letter and see if it is a vowel.

#41

February 24th, 2013, 04:56 PM

burakaltr

Contributing User

Join Date: Feb 2013

Posts: 46

Time spent in forums: 9 h 55 m 44 sec
Reputation Power: 0

Sorry to interrupt but code below might get you negative score from your instructor

Code:

d = strippedInput1.charAt(index);
	
	if (d == 'a' || d == 'A' || d == 'e' || d == 'E' || d == 'i' || d == 'I'
			|| d == 'o' || d == 'O' || d == 'u' || d == 'U')

since d is already LowerCase

#42

February 24th, 2013, 04:58 PM

ctroop4ever

Contributing User

Join Date: Feb 2013

Posts: 39

Time spent in forums: 4 h 15 m 8 sec
Reputation Power: 1

Quote:

Originally Posted by NormR

I honestly dont know how to code that, you must think im so slow

i use index + 1 yes, where do I put that though? on its on? twice like once after the vow and once after the con, or what? and how do I make it say basically this letter is a vowel, if the next letter is a consonant keep checking the rest to see if the pattern continues?? i dont know how to finish coding this