Given a string, we have to find its first non-repeating character. The String class in Kotlin is defined as: class String : Comparable, CharSequence String Literals. There are whole bunch of ways we can define a String in Kotlin. Here, we are going to learn how to find first non-repeating character in a given string in Kotlin programming language? Since the input is a list, first convert it to a primitive charcater array using toCharArray() function. last(): Returns last character in the string or throws NoSuchElementException if string is empty. Kotlin strings are also immutable in nature means we can not change elements and length of the String. The elements of the string are accessed by indexing operation, i.e., string[index]. Note: Space is also a valid character between the MY_NAME string..substringAfter(delimiter: String, missingDelimiterValue: String = this) Method. lastIndex: Represents the index of last character in string. Strings are represented by the type String.Strings are immutable. String.dropWhile (predicate: (Char) -> Boolean): String: It returns a character sequence which contains all the characters, except first characters … An array of characters is called a string. Let’s replicate it as a Kotlin extension. kotlin-serialization: Any way to get character indices from a string being decoded? String.dropLast(n: Int): String: It returns a string after removing the last n character. Introduction A string is a basic data type in a programming language. I'm working with serialization, and I need a way of identifying the index of the starting and ending characters of individual objects in a Json string. Example: Input: string = "includehelp" Output: First Non-Repeating char in includehelp is i Input: string = "abcd" Output: First Non-Repeating char in abcd is a Index 0 represents the first element, index 1 represents the second element and so on. Kotlin strings are mostly similar to Java strings but has some new added functionalities. Declare a String in Kotlin. Kotlin Strings are more or less similar to Java Strings, however Kotlin has more APIs for working with strings. In this post, we will learn different Kotlin string methods to remove the first and last characters of a string. It returns a string after removing the first n character. String's index value starts from 0 and ends at a value less than the size of the string, i.e., string[string.length-1]. But first, I’d like to make two notes: Path can end with trailing slash. In Kotlin, there are two types of string literals: an escaped string with some escaped character in it; a raw string At some point, you may need to get a substring using a defined delimiter parameter. The result you get is the substring after the first appearance of delimiter.If the source string does not contain the delimiter, then the … If String contains a path or URL, it returns last component (after last ‘/’). String is a sequence of characters. As per title! In this guide, we will see how to declare, use and manipulate strings in Kotlin. Kotlin String Methods: get ... Returns first character in the string or throws NoSuchElementException if string is empty. 3. concatToString() function Alternatively, you can use concatToString() function which concatenates characters of the CharArray into a String. In the previous lesson, Solved tasks for Kotlin lesson 7, we learned to work with arrays.If you noticed some similarities between arrays and strings, you were absolutely onto something. Submitted by IncludeHelp, on April 28, 2020 . 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