Using loops and arrays to acquire the total sum of values in a record

[isaacsanya01]

Hello there,

I need some help working with arrays and loops. i have a set of records that contains different actions. i need to iterate over the records, check the actions per record, and do some calculations based on the actions. so for example if 1 record have one action, the calculation is performed once, if another record have 2 actions, the calculation is performed twice. The issue i have is adding the total calculated sum of the actions per record. Currently, the program is totaling the result of the first record twice. i want it to total per record, please find below my current code. any advice on this is greatly appreciated. thanks

 
ArrayList<Double> fixityCheckCost = new ArrayList<Double>();
if (action.getActionType().equals(ActionType.FIXITYCHECK) && action.getTrigger().equals(Trigger.ON_TIME))
			    {
			    	FixityPlugin fixityPlugin = (FixityPlugin) psiList.get(0).getPluginService().getPlugin();
				    System.out.println(aggregationActions.getAggregation().getId() + " Aggregation Actions: " + fixityPlugin.getProcessingCostPerHour());
				    
				    double fixityProcessingCostPerH = fixityPlugin.getProcessingCostPerHour();
				    
				    double result = fixityProcessingCostPerH * 2.0;
				    
				    System.out.println (fixityPlugin.getAlgorithm() + " result is " + result);
				    
					
					fixityCheckCost.add(result);
					
					double sum = 0.0;
					
				
					for (int i = 0; i < fixityCheckCost.size(); i++)
					   { 
				    	
				    	sum += fixityCheckCost.get(i);
				    	i++;
						System.out.println(fixityPlugin.getAlgorithm() + " TOTAL IS " + sum);
					
						 //System.out.println(sum);
						
					   }
					
					}

[Rabbit]

You are missing a lot of detail in your question so it's hard to know what's wrong but one glaring error I see is that you increment i twice. Also you print your total within the loop when it should probably be outside the loop.

[isaacsanya01]

thanks for pointing out the two errors but i think i have sorted it out now with the following code below. the highlighted code did the trick. however, i would still like to understand the logic of this line of code. the question really is how do i sum up data stored in an arrayper record. so imagine i iterate over several records of information, and for each record i execute calculations, some i execute once, some i execute more than once. i wanted to find out how i display the total sum per record. not for the total sum for the overall list of records as that was what i was previously getting

		ArrayList<Double> fixityCheckCost = new ArrayList<Double>();
		    if (action.getActionType().equals(ActionType.FIXITYCHECK) && action.getTrigger().equals(Trigger.ON_TIME))
			    {
			    	FixityPlugin fixityPlugin = (FixityPlugin) psiList.get(0).getPluginService().getPlugin();
			    	System.out.println(aggregationActions.getAggregation().getId() + " Aggregation Actions: " + fixityPlugin.getProcessingCostPerHour());

			    	double fixityProcessingCostPerH = fixityPlugin.getProcessingCostPerHour();

			    	double result = fixityProcessingCostPerH * 2.0;

			    	System.out.println (fixityPlugin.getAlgorithm() + " result is " + result);


			    	fixityCheckCost.add(result);

			    	[B]int numUnique = new HashSet<Double>(fixityCheckCost).size();[/B]

			    	double sum = 0.0;

			    	for (int i = 0; i < numUnique; i++)
			    	{ 

			    		sum += fixityCheckCost.get(i);

			    		// System.out.println(sum);

			    	}
			    	System.out.println(fixityPlugin.getAlgorithm() + " TOTAL IS " + sum);

			    }

[Rabbit]

I don't think anyone can answer that question unless they look at the documentation for the fixity plugin that you're using. I for one have never used that plugin.

[isaacsanya01]

yea i suppose you're correct. thanks for the input.