Method createEdges

java/0269-alien-dictionary.java:8–29

(String left, String right)

    // Return false if s.len < t.len condition is not met
    private boolean createEdges(String left, String right) {
        int minLen = Math.min(left.length(), right.length());

        for (int i = 0; i < minLen; i++) {
            char first = left.charAt(i), second = right.charAt(i);

            if (first != second) {
                Set<Character> edges = this.adjList.get(first);
                edges.add(second);
                this.adjList.put(first, edges);

                Set<Character> revEdges = this.revList.get(second);
                revEdges.add(first);
                this.revList.put(second, revEdges);

                return true;
            }
        }

        // No difference found yet, there is a problem
        return (left.length() <= right.length());
    }

    private void initialize(String[] words) {
        // Initialize