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Thread: Array and FOR

  1. #1
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    Default Array and FOR

    Hello everyone, I have a problem with an exercice, in which I have to use arrays and forward loop. Here is the question.
    As part of an English assignment, Jonathan is supposed to use 10 words and then figure out which of them is the longest
    word. Help him by writing a program that accomplishes this. Items in red indicates user input.
    SAMPLE OUTPUT
    Enter 10 words, Jonathan :
    Singing
    Dancing
    Copenhagen
    Denmark
    Computers
    Apple
    Pineapple
    Music
    Director
    Cinema
    The longest word in the list is: Copenhagen
    So here is what i've got so far:
    class ArrayAssignement
    {
    public static void main (String []args)
    {
     
    String word[] =new String[10]; //what will store the 10 words
    String longest="";
     
    System.out.println("Enter 10 words: "); //prints out enter 10 words
     
     
    for (int position=0; position<word.length; position++) //position is 0, as long as position is smaller then the length of the biggest word, counter+1
    {
    	word[position]=TextIO.getWord();	//accepts the user input
    }
     
     
    for(int counter=0; word[counter].length()<word[counter+1].length(); counter++)
    {	
    	word[counter]=longest;
    }	
     
    System.out.println("the longest word is "+longest);
     
    }
    }
    It doesn't seem to print out longest, and also im not sure that the logic is correct in there.
    Thank you


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    Default Re: Array and FOR

    It doesn't seem to print out longest,
    Can you post what it does print out and explain what is wrong with it?

    im not sure that the logic is correct
    Can you explain what your logic is? You'll need to have working logic BEFORE you try to write any code.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: Array and FOR

    yep ur logic is correct....
    you made a minor mistake...

    you should assign a value to variable/field...i.e., variable=value
    but in ur code....u wrote word[counter]=longest;
    it means your are giving "null" to word[counter]....

    correct line must be:: longest=word[counter];


    also one more thing....you didnt specify end point to the for loop,so it u'll get an arrayIndexOutOfBounds exception...
    so write code like this....

    longest=word[0];counter=0;
    while(counter <10)
    {
    if(word[counter].length()<word[counter+1].length()) {longest=word[counter];}
    counter++;
    }
    hope it helps

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