Add stack dumper helper function.

        return dp[sl][tl];

    }

    // Get the current stack trace

    public static String getStackTrace() {

        StringBuilder sb = new StringBuilder();

        try {

            throw new RuntimeException();

        } catch (RuntimeException e) {

            StackTraceElement[] frames = e.getStackTrace();

            // Start at 1 because the first frame is here and we don't care about it

            for (int j = 1; j < frames.length; ++j) sb.append(frames[j].toString() + "\n");

        }

        return sb.toString();

    }

    // In dictionary.cpp, getSuggestion() method,

    // suggestion scores are computed using the below formula.

    // original score (called 'frequency')