Mine

	public TrieNode findNodeIndex(TrieNode currentNode, int i) {		if (currentNode.index == i) {			return currentNode;		}		if (currentNode.link != null) {			TrieNode node = findNodeIndex(currentNode.link, i);			if (node != null) {				return node;			}		}		if (currentNode.next != null) {			TrieNode node = findNodeIndex(currentNode.next, i);			if (node != null) {				return node;			}		}		return null;	}