// returns a string will all values from list
public String toString() {
String output = "";
HistoNode toCopy = front;
while (toCopy.getNext() != null) {
output += toCopy.getLetter() + " - " + toCopy.getLetterCount() + " ";
toCopy = toCopy.getNext();
}
return output;
}
// returns a reference to the node at spot
private HistoNode nodeAt(int spot) {
int count = 0;
HistoNode copy = front;
while (copy != null) {
if (count == spot) return copy;
count++;
copy = copy.getNext();
}
return copy;
}
// returns the index pos of let in the list if let exists
public int indexOf(char let) {
int count = 0;
HistoNode copy = front;
while (copy != null) {
if (copy.getLetter() == let) {
return count;
} else {
copy = copy.getNext();
count++;
}
}
return -1;
}
// addLetter will add a new node to the front for let if let does not exist
// addLetter will bump up the count if let already exists
public void addLetter(char let) {
if (front == null) {
front = new HistoNode(let, 1, null);
} else {
if (indexOf(let) < 0) {
HistoNode temp = new HistoNode(let, 1, front);
front = temp;
} else {
HistoNode temp = front;
temp = nodeAt(indexOf(let));
temp.setLetterCount(temp.getLetterCount() + 1);
}
}
}