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How to check if a number is divisible by all the numbers in a given list in Kotlin

How to check if a number is divisible by all the numbers in a given list in Kotlin.

Here's a step-by-step tutorial on how to check if a number is divisible by all the numbers in a given list using Kotlin.

Step 1: Define the number and the list of divisors​

  • Start by declaring a variable to store the number you want to check for divisibility. For example, let's say the number is num.
  • Next, create a list of divisors that you want to check the number against. For example, let's say the list is divisors.

Step 2: Implement the divisibility check​

  • Use the all function in Kotlin to check if the number is divisible by all the divisors in the list. The all function returns true if all the elements in the list satisfy the given condition.
  • Inside the all function, use the modulo operator % to check if num is divisible by each divisor. If the remainder is zero, it means num is divisible by that divisor. Otherwise, it means num is not divisible by that divisor.
  • If any of the divisors return false for the divisibility check, the all function will return false. Otherwise, it will return true.

Here's an example implementation:

fun isDivisible(num: Int, divisors: List<Int>): Boolean {
    return divisors.all { num % it == 0 }
}

Step 3: Test the implementation​

  • Create a sample number and a list of divisors to test the implementation.
  • Call the isDivisible function with the number and the list of divisors as arguments.
  • Print the result to check if the number is divisible by all the divisors.

Here's an example test:

fun main() {
    val num = 15
    val divisors = listOf(3, 5)

    val result = isDivisible(num, divisors)
    println("Is $num divisible by all the divisors? $result")
}

Output:

Is 15 divisible by all the divisors? true

In this example, num is divisible by both 3 and 5, so the function returns true.

You can try running the code with different numbers and divisors to test different scenarios.

That's it! You now have a step-by-step tutorial on how to check if a number is divisible by all the numbers in a given list using Kotlin.