code every day with me

--DAY 17--

Hi, I am going to make #100DaysOfCode Challenge. Everyday I will try solve 1 problem from leetcode or hackerrank. Hope you can go with me until end.
Now let's solve problem today:

• Problem: Counting Valleys
• Detail: here
• Idea : we only care below part, if we reach to the sea level, it means we that's valleys.
  • ex : UDDDUDUU
  • If we represent _ as sea level, a step up as /, and a step down as \, the hike can be drawn as:

_/\      _
   \    /
    \/\/

• We only care about below part, so the number the hiker reach to the sea level is 1.
  • My solution (javascript):

function countingValleys(steps, path) {
    let count=0,lv=0;
    for(let i in path){
        if(path[i]=='U'){
            lv++;
            if(lv==0) count++;
        }
        else lv--;
    }
    return count;
}

-->If you have better solution or any question, please comment below. I will appreciate.