Kotlin program to convert one character to integer

Introduction :

In this tutorial, I will show you how to convert one character to integer in Kotlin. Kotlin provides a lot of utility functions for each class.

Method 1: Using Character.getNumericValue(char ch) :

This method takes one character as a parameter and returns its integer value.

fun main() {
    val givenNumbers = charArrayOf('0', '1', '8', '7', '9')

    givenNumbers.forEach {
        println("$it => ${Character.getNumericValue(it)}")
    }
}

It will print the below output :

0 => 0
1 => 1
8 => 8
7 => 7
9 => 9

We are converting each character of the character array givenNumbers.

Method 2: By converting it to a string :

Character class provides one method toInt, but it returns the ASCII value. But if we convert the character to a string and use the toInt method defined in the string class, it will convert that string to an integer.

Let’s check the below example :

fun main() {
    val givenNumbers = charArrayOf('0', '1', '8', '7', '9')

    givenNumbers.forEach {
        println("$it => ${it.toString().toInt()}")
    }
}

It will print the same output as the above example.

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