package util;

public class WeightSum {
	/**
	 * does a weighted sum
	 */

	public WeightSum(){}
	
	//
	public double getWeightSum(double [] vals, double [] weights){
		double sum = 0;
		for (int i = 0; i < vals.length; i ++){
			sum += vals[i]*weights[i];
		}
		
		return sum;

	}
	// 
	public double getWeightAvg(double [] vals, double [] weights){
		double avg = getWeightSum(vals,weights);
		double weightTotal = 0;
		
		for (int i = 0; i < vals.length; i ++){
			weightTotal += weights[i];
		}
		avg = avg/weightTotal;
		
		return avg;
	}
}