Solution to the Hackerrank - Arrays: Left Rotation

readme.md

Hackerrank - Arrays: Left Rotation

Hackerrank - Arrays: Left Rotation

Scala

import java.io._
import java.math._
import java.security._
import java.text._
import java.util._
import java.util.concurrent._
import java.util.function._
import java.util.regex._
import java.util.stream._

object Solution {

    // Complete the rotLeft function below.
    def rotLeft(a: Array[Int], d: Int): Array[Int] = {
    // Just using Array Slicing and Concatenation 
    a.slice(d, a.length) ++ a.slice(0, d)

    }

    def main(args: Array[String]) {
        val stdin = scala.io.StdIn

        val printWriter = new PrintWriter(sys.env("OUTPUT_PATH"))

        val nd = stdin.readLine.split(" ")

        val n = nd(0).trim.toInt

        val d = nd(1).trim.toInt

        val a = stdin.readLine.split(" ").map(_.trim.toInt)
        val result = rotLeft(a, d)

        printWriter.println(result.mkString(" "))

        printWriter.close()
    }
}