Shifting Compartments - KOTLIN

// Author : Saurav Kalsoor
// Shifting Compartments - KOTLIN


import java.util.*

var sc = Scanner(System.`in`)

fun main() {
    val n = sc.nextInt()
    val q = sc.nextInt()
    val str = sc.next()
    val l = ArrayList<Int>()
    val r = ArrayList<Int>()
    val k = ArrayList<Int>()

    for (i in 0 until q) {
        l.add(sc.nextInt())
        r.add(sc.nextInt())
        k.add(sc.nextInt())
    }
    println(shiftingCompartments(n, q, str, l, r, k))
}

fun shiftingCompartments(n: Int, q: Int, s: String, l: ArrayList<Int>, r: ArrayList<Int>, k: ArrayList<Int>): String? {
    val str = s.toCharArray()
    for (i in 0 until q) {
        cycle(str, l[i], r[i], k[i])
    }
    return String(str)
}

fun myReverse(str: CharArray, i: Int, j: Int) {
    var i = i
    var j = j
    while (i < j) {
        val temp = str[i]
        str[i] = str[j]
        str[j] = temp
        i++
        j--
    }
}

fun cycle(str: CharArray, l: Int, r: Int, k: Int) {
    var k = k
    val n = r - l + 1
    k %= n
    myReverse(str, l, l + n - k - 1)
    myReverse(str, l + n - k, r)
    myReverse(str, l, r)
}