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Thread: Array Troubles

  1. #1
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    Default Array Troubles

    ok, I have to write a code for this question

    Create a program that reads a list of vowels (a, e, i, o, u) and stores them in an array. The maximum number of vowels to be read should be obtained from the user before beginning to read the vowels, however, the user may cancel the reading of vowels at any time by entering '#'. The algorithm should then count and display the number of times each vowel appears in the array. Finally the algorithm should also output the index in the array where each vowel first appeared or a suitable message if a particular vowel is not in the array at all.

    I don't even know what an array is! We went from learning C Programming straight into Java Programming and now this is the first question that was given.

    I've looked at the tutorials on this site but not sure which array I would use for this problem. Can anyone point me in the right direction?

    Thanks


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    Default Re: Array Troubles

    A simple array of characters.

        char[] charArray = new char[5];
        charArray[0] = 'a';
        charArray[1] = 'e';
        charArray[2] = 'i';
        charArray[3] = 'o';
        charArray[4] = 'u';

    This is a character array which will hold a maximum of 5 items. The array index is zero based and therefore the first item can be set/get by calling charArray[0].

    Is that of any help to you?

    // Json

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    Default Re: Array Troubles



    um, I'm not sure lol...

    this is what I have so far

    import B102.*;
     
    class vowels
    {
    	public static void main(String args[])
    	{
     
    	char[] charArray = new char[5];
    	charArray[0] = 'a';
    	charArray[1] = 'e';
    	charArray[2] = 'i';
    	charArray[3] = 'o';
    	charArray[4] = 'u';
     
    	Screen.out.print("How many vowels would you like to read in?");

    then would I perform some kind of calculation?
    Last edited by helloworld922; October 14th, 2009 at 01:02 AM.

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    Default Re: Array Troubles

    You can create an array of arbitrary length. Note that once it's created, you can't change it's length

    char[] someArray = new char[length];// length is how many char's can fit in this array

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    Default Re: Array Troubles

    I'm still at a loss with Arrays, I have no idea how to even start writing this program, it doesn't even seem possible :/

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    Default Re: Array Troubles

    Have you taken a look at this yet? It's a little hard to understand at first, but it has the basics of using arrays.

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    Default Re: Array Troubles

    thanks helloworld! Thats exactly what I needed

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