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Thread: Build a method that prints only a specific section of a file based array in java

  1. #1
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    Default Build a method that prints only a specific section of a file based array in java

    Good day guys. I have to build a method that prints only a section of an array.

    I set it up like this:

    printArray1( intList, countOfInts, 3,  6 );

    because it denotes that it prints inclusively between array[3] and array[6].

    My problem is that I do not know how to build into the method the sectioning off part.

    This is what I've come up with.

    static public int printArray1( int[] intList, int countofInts, ???, ???)
    {
        if (countofInts >= 0 && (intList.length-9 <= countofInts && countofInts >= (intList.length-6) ))
        {
            for (int i = 0; i < countofInts; i++) 
            {
                System.out.print(intList[i] + "\t ");
            }
        }
     
    return countofInts;
    }

    How to incorporate this sectioning off into the method?

    Earlier in the program it reads a file then stores the info into an array. How do I get the method to only print that certain section of the array?
    the numbers 3, 6 refer to the position of the array not the information stored in the array slot.


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    Default Re: Build a method that prints only a specific section of a file based array in java

    Quote Originally Posted by WeekzGod View Post
    My problem is that I do not know how to build into the method the sectioning off part.

    static public int printArray1( int[] intList, int countofInts, ???, ???)
    First of all, the countofInts is not necessary. An array has a length property but in your case is not even necessary.
    Second, the other two parameters can be simple int values, named e.g. start and end.
    Third, in this method you have only to do a simple for where an index i goes from start to end (inclusive).


    P.S. static public or public static are technically the same for compiler. But please, you should prefer the latter.
    Andrea, www.andbin.net SCJP 5 (91%) SCWCD 5 (94%)

    Useful links for Java beginners My new project Java Examples on Google Code

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    Default Re: Build a method that prints only a specific section of a file based array in java

    I'm a beginner.
    "Third, in this method you have only to do a simple for where an index i goes from start to end (inclusive)."
    you lost me at that

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    Default Re: Build a method that prints only a specific section of a file based array in java

    Don't use being a beginner as an excuse. Man up and move on.

    The point is that you don't iterate the whole array from the first element to the last. You only have to iterate from the element you want to begin printing (element at index start) through the last, (element at index end).

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