How to capitalise first letters of all word in a sentence in Kotlin

Question

this is my/his house - Input

This Is My/His House - Output

In Swift ,there is capitalized method which gives the above output ,is there any way to achieve the same in kotlin

Does this answer your question? [Capitalise every word in String with extension function](https://stackoverflow.com/questions/52042903/capitalise-every-word-in-string-with-extension-function) — Morrison Chang, May 19 '23 at 05:45

Tippu Fisal Sheriff · Answer 1 · 2023-05-19T09:24:46.347

1

In Kotlin

val s = "this is my/his house"
println(s.toCapitalizeEachWord())

Extension Function:

fun String.toCapitalizeEachWord() : String{
return this.split(" ").map {
    if(it.contains("/")){
        it.split("/").map { word -> word.replaceFirstChar { firstChar -> firstChar.uppercase() }
        }.joinToString("/")
    }else{
        it.replaceFirstChar { firstChar -> firstChar.uppercase() }
    }
}.joinToString(" ") }

Input: this is my/his house

Output: This Is My/His House

edited May 19 '23 at 09:24

answered May 19 '23 at 05:51

Tippu Fisal Sheriff

2,177
11
19

Thanks ,but if your compare the input & output my/his My/His the above funtion doesn't work for this words – Sathrya Selvin May 19 '23 at 06:04
Answer updated, try now. – Tippu Fisal Sheriff May 19 '23 at 06:48

score 0 · Answer 2 · answered May 19 '23 at 05:57

0

You have to capitalize every word.

However String.capitalize() is now deprecated.

The easer solution is:

    fun String.capitalizeSentence(): String =
        this.trim().split("\\s+".toRegex())
            .joinToString(" ") { it.replaceFirstChar { if (it.isLowerCase()) it.titlecase(Locale.ROOT) else it.toString() } }

answered May 19 '23 at 05:57

Aleksei Sinelnikov

311
5

Thanks,but the word "my/his" needs to be converted to "My/His" ,but the method only converts as My/his – Sathrya Selvin May 19 '23 at 06:07

score 0 · Answer 3 · answered May 19 '23 at 06:37

Well many has posted correct core logic or main logic so you just needed to add little bit your own logic to work . Anyways below method is tested with your requirement and it is working fine

fun String.capitalizeEachWord() : String{
    return this.split(" ").map {
        if(it.contains("/")){
            it.split("/").map { word -> word.replaceFirstChar { firstChar -> firstChar.uppercase() }
             }.joinToString("/")
        }else{
            it.replaceFirstChar { firstChar -> firstChar.uppercase() }
        }
    }.joinToString(" ")
}

How to capitalise first letters of all word in a sentence in Kotlin

3 Answers3