Best String Manipulation Tools in Kotlin to Buy in January 2026
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To remove a specific string from a list of strings in Kotlin, you can use the filter() method along with the notEquals operator to create a new list that does not contain the desired string. Here's an example code snippet:
val listOfStrings = listOf("apple", "banana", "orange", "grape") val stringToRemove = "orange"
val filteredList = listOfStrings.filter { it != stringToRemove }
This will create a new list called filteredList that excludes the string "orange" from the original listOfStrings.
How to remove strings that match a regex pattern in kotlin?
You can use the replace function with a regex pattern in Kotlin to remove strings that match the pattern. Here is an example of how you can achieve this:
val input = "Hello123 World456" val pattern = "\\d+".toRegex() // this pattern will match any sequence of digits
val result = input.replace(pattern, "") // replace all matches of the pattern with an empty string
println(result) // Output: Hello World
In this example, the replace function is used to remove all sequences of digits from the input string by replacing them with an empty string. You can adjust the regex pattern to match any specific pattern you want to remove from the input string.
How to use filter function to remove strings from a list in kotlin?
You can use the filter function in Kotlin to remove strings from a list based on a specified condition. Here is an example of how you can use the filter function to remove strings from a list:
fun main() { val list = listOf("apple", "banana", 1, "orange", 2, "grape")
val filteredList = list.filter {
it !is String
}
println(filteredList)
}
In this example, the filter function is used to create a new list called filteredList that contains only elements that are not strings. The condition it !is String checks if the element is not a string, and if it is not a string, it is included in the filtered list.
When you run this code, the output will be:
[1, 2]
This shows that the strings "apple", "banana", "orange", and "grape" have been removed from the original list.
How to remove strings from a list in kotlin?
You can remove strings from a list in Kotlin using the removeAll() function. Here's an example:
fun main() { val list = mutableListOf("Apple", "Banana", "Orange", "Apple", "Grapes") val stringsToRemove = listOf("Apple", "Orange")
list.removeAll(stringsToRemove)
println(list) // Output: \[Banana, Grapes\]
}
In this example, we have a list of fruits and we want to remove the strings "Apple" and "Orange" from the list. We use the removeAll() function and pass in a list of strings to be removed. This will remove all occurrences of the specified strings from the original list.
What is the best way to remove whitespace from strings in a list in kotlin?
One way to remove whitespace from strings in a list in Kotlin is to use the map function along with the trim() function.
Here's an example code snippet:
fun main() { val list = listOf(" hello ", " kotlin ", " is awesome ")
val trimmedList = list.map { it.trim() }
trimmedList.forEach { println(it) }
}
In this example, the map function is used to apply the trim() function to each element in the list, removing leading and trailing whitespace from each string. The resulting trimmedList contains the strings with whitespace removed.
Output:
hello kotlin is awesome