How to Filter Elements of a List based on a Condition in Kotlin - Step by Step Examples

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How to Filter Elements of a List based on a Condition in Kotlin ?

Answer

To filter elements of a list based on a condition in Kotlin, you can use the filter function.

✐ Examples

1 Filter Integers Greater Than a Threshold

In this example,

We create a list named numbers with integer values.
We use the filter function to filter elements greater than a threshold value.
Finally, we print the filtered list to standard output.

Kotlin Program

fun main() {
    val numbers = listOf(1, 2, 3, 4, 5)
    val threshold = 3
    val filteredNumbers = numbers.filter { it > threshold }
    println("Filtered list: $filteredNumbers")
}

Output

Filtered list: [4, 5]

2 Filter Strings Containing a Substring

In this example,

We create a list named words with string values.
We use the filter function to filter elements containing a specific substring.
Finally, we print the filtered list to standard output.

Kotlin Program

fun main() {
    val words = listOf("apple", "banana", "cherry", "date", "elderberry")
    val substring = "erry"
    val filteredWords = words.filter { it.contains(substring) }
    println("Filtered list: $filteredWords")
}

Output

Filtered list: [cherry, elderberry]

Summary

In this tutorial, we learned How to Filter Elements of a List based on a Condition in Kotlin language with well detailed examples.

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How to Filter Elements of a List based on a Condition in Kotlin - Step by Step Examples

How to Filter Elements of a List based on a Condition in Kotlin ?

Answer

✐ Examples

1 Filter Integers Greater Than a Threshold

Kotlin Program

Output

2 Filter Strings Containing a Substring

Kotlin Program

Output

Summary

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