Class Result

Hackerrank_problems/counting_valleys/Solution.java:16–45

import static java.util.stream.Collectors.toList;

class Result {

    /*
     * Complete the 'countingValleys' function below.
     *
     * The function is expected to return an INTEGER.
     * The function accepts following parameters:
     *  1. INTEGER steps
     *  2. STRING path
     */

    public static int countingValleys(int steps, String path) {
        int elevation = 0;
        int valleys = 0;

        for (int i = 0; i < steps; i++) {
            if (path.charAt(i) == 'U') {
                if (elevation == -1) {
                    valleys ++;
                }
                elevation ++;
            } else {
                elevation --;
            }
        }
        return valleys;

    }

}

public class Solution {
    public static void main(String[] args) throws IOException {