Palindrome Checking - KOTLIN

package com.company

import java.util.*

fun main() {
    val sc = Scanner(System.`in`)
    val n = sc.nextInt()
    val list = ArrayList<Int>()
    for (i in 0 until n) {
        val num = sc.nextInt()
        list.add(num)
    }

    println(isPalindrome(list, n))
}

fun isPalindrome(list: ArrayList<Int>, n: Int): Boolean {
    val stringBuilder = StringBuilder()
    for (a in list) {
        stringBuilder.append(a)
    }

    val size = stringBuilder.length
    for (i in 0 until size / 2) {
        if (stringBuilder[i] != stringBuilder[size - i - 1]) return false
    }

    return true
}