this is an algo peoblem from hacker rank

hike.js

/*
this is an algo peoblem from hacker rank https://www.hackerrank.com/challenges/counting-valleys/problem?isFullScreen=true
*/

function countingValleys(steps, path) {
  let count = 0;
  let level = 0;
  
  path.split("").forEach(unit => {
    if(unit === "D") {
      level--
    } else {
      level++
    };
    
    if(level == 0 && unit === "U") count++;
  });
  
  return count;
}