Question

How to reverse a string in Kotlin

Answer 1

fun reverseString(str: String): String {
    var reversedstr = ""
    
    for (i in str.length - 1 downTo 0) {
        reversedstr += str[i]
    }
    
    return reversedstr
}

fun main() {
	val str = "kotlin"

	println(reverseString(str))
}



/*
run:
  
niltok
  
*/

 

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Answer 2

fun main() {
	val str = "kotlin"

	println(str.reversed())
}


/*
run:
  
niltok
  
*/

 

70+ SQL courses for beginners and professionals

Answer 3

fun main() {
	val str = "kotlin"

	println(StringBuilder(str).reverse().toString())
}


/*
run:
  
niltok
  
*/

 

70+ SQL courses for beginners and professionals