Go R1 Day 19

// my submission for Counting Valley on Hackerrank
// https://www.hackerrank.com/challenges/counting-valleys/submissions/code/193156571
package algo

import (
    // "bufio"
    // "fmt"
    // "io"
    // "os"
    // "strconv"
    "strings"
)

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

func CountingValleys(steps int, path string) (valleyCounter int) {
  pathList := strings.Split(path, "")
    //fmt.Printf("pathlist: %s", pathList)
    currentElevation := 0
    var enteredValley bool

    for i := 0; i < steps; i++ {
        if pathList[i] == "U" {
            currentElevation++
        } else {
            currentElevation--
        }
        if currentElevation < 0 && enteredValley == false {
            enteredValley = true
            valleyCounter++
        }
        if currentElevation >= 0 && enteredValley == true {
            enteredValley = false
        }
    }
    return valleyCounter
}

// func main() {
//     reader := bufio.NewReaderSize(os.Stdin, 16*1024*1024)
//     stdout, err := os.Create(os.Getenv("OUTPUT_PATH"))
//     checkError(err)
//     defer stdout.Close()

//     writer := bufio.NewWriterSize(stdout, 16*1024*1024)
//     stepsTemp, err := strconv.ParseInt(strings.TrimSpace(readLine(reader)), 10, 64)
//     checkError(err)
//     steps := int(stepsTemp)
//     path := readLine(reader)
//     result := CountingValleys(steps, path)
//     fmt.Fprintf(writer, "%d\n", result)
//     writer.Flush()
// }

// func readLine(reader *bufio.Reader) string {
//     str, _, err := reader.ReadLine()
//     if err == io.EOF {
//         return ""
//     }

//     return strings.TrimRight(string(str), "\r\n")
// }

// func checkError(err error) {
//     if err != nil {
//         panic(err)
//     }
// }