How do you reverse a string on Kotlin?

How do you reverse a string on Kotlin?

Reverse a string in Kotlin

1. Using reversed() function. The standard way to reverse a string in Kotlin is with the reversed() function.
2. Using StringBuilder. You can also use the reverse() function of the StringBuilder class to efficiently reverse a string, as shown below:
3. Using + Operator.
4. Using Character Array.

Can I reverse a string?

Strings can be reversed using slicing. To reverse a string, we simply create a slice that starts with the length of the string, and ends at index 0. The slice statement means start at string length, end at position 0, move with the step -1 (or one step backward).

How do you substring in Kotlin?

Returns a substring of this string that starts at the specified startIndex and continues to the end of the string. Returns the substring of this string starting at the startIndex and ending right before the endIndex.

How do you reverse an array in Kotlin?

Reverse an array in Kotlin

1. fun main() {
2. val arr: Array = arrayOf(1, 2, 3, 4, 5)
3. arr. reverse();
4. println(arr. contentToString())
5. }

How do you use a loop in Kotlin?

Kotlin for loop is used to iterate a part of program several times. It iterates through arrays, ranges, collections, or anything that provides for iterate….For example:

1. fun main(args : Array) {
2. val marks = arrayOf(80,85,60,90,70)
3. for(item in marks. indices)
4. println(“marks[$item]: “+ marks[item])
5. }

How do you split in Kotlin?

Split a string using a delimiter in Kotlin

1. Using String’s split() function. The standard solution to split a string in Kotlin is with the native split() function, which takes one or more delimiters as an argument and splits the string around occurrences of the specified delimiters.
2. Using Pattern’s split() function.

How do you get the first character of string in Kotlin?

Kotlin string indexing It uses indexing operations and alternative string methods. The indexes start from zero; therefore, the first character has zero index. The index of the character is placed between square brackets. The first() method returns the first and the last() returns the last character of the string.

How do I use a List on Kotlin?

Create a new List using the Kotlin standard library function listOf() , and pass in the elements of the list as arguments separated by commas. listOf(1, 2, 3, 4, 5, 6) returns a read-only list of integers from 1 through 6.

How do you break when Kotlin?

There are two types of break expression in Kotlin: As we all know, Unlabelled break is used to terminate to the closest enclosing loop when certain condition is satisfied. But labelled break is used to terminate to a desired loop when certain condition is satisfied. It can be done with the help of labels.

How to reverse a string in Kotlin recursively?

The algorithm we are using is like below : Ask the user to enter a string. Read and store it in a variable. Pass the string to a different function. Call this function recursively and add the first character to the end of the final string. Keep adding the current character to the end to build the final reverse string.

How is the Order of surrogates reversed in reverse Kotlin?

Reverses the contents of this string builder and returns this instance. Surrogate pairs included in this string builder are treated as single characters. Therefore, the order of the high-low surrogates is never reversed.

How to return a string in reversed order?

Returns a char sequence with characters in reversed order. Returns a string with characters in reversed order.

How is a reverse string treated in Clojure?

Strings are treated as sequential collections of characters. reverse returns the character list in reverse order, and apply takes this collection and feeds it as arguments into str to return a full reversed string. As Clojure data structures are immutable, we can guarantee that s is unaltered.