private double determineCorrelationCoeffecient(ArrayList<Integer> l1, ArrayList<Integer> l2){
		if(l2.size() != 0){
			int numberOfElementsOfL2inL1 = 0;
			for(Integer i: l1){
				for(Integer j: l2){
					if(i.equals(j)){
						numberOfElementsOfL2inL1++;
						break;
					}
				}
			}
			//The number of pages shared between the two divided by the size of the search term.
			System.out.println(numberOfElementsOfL2inL1);
			return ((double)numberOfElementsOfL2inL1/(double)l2.size());
		}
		else {
			return 0.0;
		}
	}