public void letterSplit() {
        int size = this.matrixList.size();
        for (int i = 0; i < size; i++) {
            String s = this.matrixList.get(i);
            StringTokenizer stringTokenizer = new StringTokenizer(s);
            int j = 0;
            while (stringTokenizer.hasMoreElements()) {
                switch (j) {
                    case 0:
                        this.A.add(Double.valueOf((String)stringTokenizer.nextElement()));
                        j++;
                        break;
                    case 1:
                        this.C.add(Double.valueOf((String)stringTokenizer.nextElement()));
                        j++;
                        break;
                    case 2:
                        this.G.add(Double.valueOf((String)stringTokenizer.nextElement()));
                        j++;
                        break;
                    case 3:
                        this.T.add(Double.valueOf((String)stringTokenizer.nextElement()));
                        break;
                }
            }
        }
    }