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Join Date: Sep 2008

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ezkonekgal ezkonekgal is offline

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queue question

Jan 21st, 2009

When you put an item on a queue, how do you show the items inside the queue? do you use peek method? the situation is a linked queue...

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Join Date: Nov 2008

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verruckt24 verruckt24 is offline

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Re: queue question

Jan 21st, 2009

When putting an item inside the queue why do you want to show the queue. Or is it some assignment requirement that on every addition of element to the queue you need to show the queue structure ?
If yes, then write some method that traverses the entire queue and shows the data stored ar every location of the list queue.
If not give us details.

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Join Date: Sep 2008

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ezkonekgal ezkonekgal is offline

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Re: queue question

Jan 21st, 2009

•

Originally Posted by verruckt24

Or is it some assignment requirement that on every addition of element to the queue you need to show the queue structure ?.

Yes!..

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Originally Posted by verruckt24

If yes, then write some method that traverses the entire queue and shows the data stored ar every location of the list queue.
.

 Help with Code Tags 
 Java Syntax (Toggle Plain Text) 
public String toString(){
    	String s = "[ ";
    	if (front.info != null){
    		s += "( " + peek().toString() + " )" + " ]";
    	}else{
    		s += "]";
    	}
    	return s;
    }
public String toString(){
    	String s = "[ ";
    	if (front.info != null){
    		s += "( " + peek().toString() + " )" + " ]";
    	}else{
    		s += "]";
    	}
    	return s;
    }

my prof. instructed me or siad to have an tostring method for that.. so i had the above. but it shows only the first element added to the queue.. what's wrong with it?

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verruckt24 verruckt24 is offline

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Re: queue question

Jan 21st, 2009

You need to traverse the queue entirely for that, currently you are just showing the info of the first node.
Do something like this :

 Help with Code Tags 
 java Syntax (Toggle Plain Text) 
public void showQueue(myQueue head){
    myQueue temp = head;
    while(temp != null){
        System.out.println(temp.data.toString()); // prints out data at this node.
        temp = temp.next; // next should be the link to the next node
    }
}
public void showQueue(myQueue head){
    myQueue temp = head;
    while(temp != null){
        System.out.println(temp.data.toString()); // prints out data at this node.
        temp = temp.next; // next should be the link to the next node
    }
}