Kotlin provides its own way of looping on ranges. IntStream.range(0, 100).forEach(System.out::println) A Kotlin Approach Examples of either can be seen below: // Traditional for loop A more modern approach would be something like using a Java 8 IntStream. One of the most well-known ways to iterate on a range is to use the traditional for loop. Check if Number is in a given RangeĪfter you have created a range variable, if you want to check if a given number falls in that range or not, then we can do it easily using the in operator with if condition.There’s a common way in Java to do loops. In the code example above we are creating a range from 1 to 9, including both 1 and 9 in it. Here is a basic example of it: val range = 1.rangeTo(9) We can also use rangeTo() function to create the range. Kotlin Range using the rangeTo() Operator: The only shortcoming is that we cannot create a range with a pattern where we skip/jump numbers, for example, if you want to create a range of number 1, 3, 5, 7, etc. If you want to create a range of numbers with all the numbers included in the range then using the. In the code example above, we created a range using the. Let us create a range from 1 to 9 using the. operator and the rangeTo() function, let's cover them one by one. Kotlin: Create a rangeĪs we mentioned above, we can either use the. We can create a range with the help of rangeTo() function in Kotlin or using the. The range may also have a step (step is used to jump numbers or characters while defining the range from start to end boundaries). The boundary points are start & end and both of them are included in the range. In the mathematical sense, a range is a sequence of numbers, characters, etc. In this tutorial, we will discuss about range in Kotlin.
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