public static int countingValleys(int steps, String path) {
        int  currentLevel    = 0;
        char down            = 'D';
        int  numberOfValleys = 0;

        for (Character c : path.toCharArray()) {
            int step = c == down ? -1 : 1;
            if (currentLevel < 0 && (currentLevel + step) == 0) {
                numberOfValleys++;
            }
            currentLevel += step;
        }
        return numberOfValleys;
    }