Kotlin Program to reverse a number

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In this program, You will learn how to reverse a number in Kotlin.

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123 => 321

456 => 654

Example: How to reverse a number in Kotlin.

import java.util.Scanner

fun main(args: Array<String>) {

    var n: Int
    var r: Int
    var rev = 0

    var sc = Scanner(System.`in`)

    print("Enter a number:")
    n = sc.nextInt()

    while (n > 0) {
        r = n % 10
        rev = rev * 10 + r
        n /= 10
    }

    println("Reverse number is:$rev")
}

Output:

Enter a number:123
Reverse number is:321