Counting Valleys || HackerRank

CountingValleys.java

// Complete the countingValleys function below.
    static int countingValleys(int n, String s) {
        int noOfValleys = 0;
        int currentLevel = 0;
        for(char c: s.toCharArray()){
            if(c == 'U') ++currentLevel;
            if(c == 'D') --currentLevel;
            if(currentLevel == 0 && c == 'U') ++noOfValleys;
        }
        return noOfValleys;
    }