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  1. Prepare
  2. Algorithms
  3. Implementation
  4. Counting Valleys
  5. Discussions

Counting Valleys

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4159 Discussions

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  • henrylong7191
     + 0 comments

    ` function countingValleys(steps: number, path: string): number {

    let level = 0;
let ans = 0;    

for (let p of path) {
    if (p === 'D') {
        level --;
    } else if (p === 'U') {
        level ++;
    }
    if (level === 0 && p === 'U') {
        ans ++;
    }
}
return ans;

    }

  • dharshib
     + 0 comments
    public static int countingValleys(int steps, String path) {
        // Write your code here
        int difference = 0;
        boolean isValley = false;
        int count = 0;
        
        for (int i = 0; i < path.length(); i++) {
            if (difference == 0 && isValley) {
                count++;
            }
            if (path.charAt(i) == 'U') {
                if (difference == 0) {
                    isValley = false;
                }
                difference++;
            } else {
                if (difference == 0) {
                    isValley = true;
                }
                difference--;
            }
        }
        
        if (isValley && difference == 0) {
            count++;
        }
        return count;
    }

  • sansijayy
     + 0 comments

    **Logic to solve the problem is if the previous step was a "U" and the sealevel count becomes 0 it is a valley. **

            int sealevel = 0;
        int valley = 0;
        char[] charPath = path.toCharArray();
        for (int i = 0; i < steps ; i++) {
            if (charPath[i]=='U'){
                sealevel++;
                if(sealevel==0) valley++;
            } 
            if (charPath[i]=='D') sealevel--;
        }
        return valley;
    }
}

  • greivin_lopez
     + 0 comments
    def counting_valleys(steps, path):
    count = level = 0
    in_valley = False
    for i in range(steps):
        level += 1 if path[i] == "U" else -1
        if level == -1 and path[i] == "D" and not in_valley:
            count += 1
            in_valley = True
        if level == 0 and path[i] == "U" and in_valley:
            in_valley = False
    return count

  • anarod_val25
     + 0 comments
    int countingValleys(int steps, string path) {
    int path_counter = 0, valeys = 0;
    bool topo = true;
    
    for(char c : path){
        
        if(c=='U'){
            path_counter++;
            
            if(path_counter>=0){
                topo = true;
            }
        }
        
        if(c=='D'){
            path_counter--;
            
            if(path_counter<0 && topo){
                valeys++;
                topo = false;
            }
            
        }
    }
    
    return valeys;
}