Method add

app/src/processing/app/helpers/CircularBuffer.java:12–18

(double num)

  private final int capacity;

  public void add(double num) {
    end = (end + 1) % capacity;
    elements[end] = num;
    if (start == end || start == -1) {
      start = (start + 1) % capacity;
    }
  }

  public double get(int index) {
    if (index >= capacity) {