How to Remove Element from Array based on a Condition in Kotlin - Step by Step Examples

How to Remove Element from Array based on a Condition in Kotlin ?

Answer

To remove an element from an array based on a condition in Kotlin, you can use the `filter` method to create a new array excluding elements that match the condition.

✐ Examples

1 Remove Integers Greater Than 5

In this example,

We create an array named `numbers` with elements including those to be removed based on the condition.
We use the `filter` method with a condition to create a new array excluding integers greater than 5.
Finally, we get a new array with integers not greater than 5.

Kotlin Program

fun main() {
    val numbers = arrayOf(1, 6, 2, 7, 3, 8, 4, 9, 5);
    val filteredNumbers = numbers.filter { it <= 5 };
    println("Array after filtering: $filteredNumbers");
}

Output

Array after filtering: [1, 2, 3, 4, 5]

2 Remove Strings Starting with 'A'

In this example,

We create an array named `words` with elements including those to be removed based on the condition.
We use the `filter` method with a condition to create a new array excluding strings starting with 'A'.
Finally, we get a new array with strings not starting with 'A'.

Kotlin Program

fun main() {
    val words = arrayOf("Apple", "Banana", "Apricot", "Grape", "Mango");
    val filteredWords = words.filter { !it.startsWith("A", ignoreCase = true) };
    println("Array after filtering: $filteredWords");
}

Output

Array after filtering: [Banana, Grape, Mango]

Summary

In this tutorial, we learned How to Remove Element from Array based on a Condition in Kotlin language with well detailed examples.

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