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Thread: Implementing a good .equals method?

  1. #1
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    Default Implementing a good .equals method?

    I am making a programming project that implements terms for polynomials. For example, if I put "7x^3+4x^2", then the class has an inner array list that stores "7x^3" and "4x^2". However, I need to implement a method .equals that I don't know how to implement very well. here is the method:

    	@Override
    	public boolean equals(Polynomial P)
    	{
    		return true;
    	}

    It has as a parameter another Polynomial P. However, the class does not include a method get() or getTerm(), so I can't do the following:

    	@Override
    	public boolean equals(Polynomial P)
    	{
    		int counter = -1;
    		for(int i = 0; i <= this.terms.size() - 1; i++)
    		{
    			if(!(this.get(i).equals(P.get(i))))
    			{
    				counter = 1;
    				break;
    			}
    		}
    		return couter == -1;
    	}

    I think I am supposed to do it with a for each loop. Can anyone help me and give me a hint of how it should be done?


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Implementing a good .equals method?

    What is the name of the arraylist? Have you tried using the get() method with that?
    If you don't understand my answer, don't ignore it, ask a question.

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